1991 Isuzu Impulse Engine Oil

Your 1991 Isuzu Impulse might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Engine Oil you desperately need.

We currently carry 33 Engine Oil to choose from for your 1991 Isuzu Impulse, and our inventory prices range from as little as $5.89 up to $38.99.

On top of low prices, Advance Auto Parts offers 4 different trusted brands of Engine Oil for the 1991 Isuzu Impulse. We only sell parts from trusted brands like Fram so that you can find quality parts you can count on.

Don’t take our word for it – check out customer ratings and reviews to buy with confidence. We have 3,659 reviews on our Engine Oil for the 1991 Isuzu Impulse from previous customers.

Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Engine Oil stock in-person!

Engine Oil for Your 1991 Isuzu Impulse

Castrol – GTX 10W-30 High Mileage Synthetic Blend Motor Oil: 5 Quart (Part No.1597B0)

GTX 10W-30 High Mileage Synthetic Blend Motor Oil: 5 Quart

from

$30.99
Castrol GTX High Mileage motor oil is the leading consumer high-mileage brand. You won’t need to worry about using a high mileage oil or synthetic because this is both. It’s a synthetic blend engine oil that helps extend the life of your engine by protecting against sludge, wear and burn-off and also liquid engineered to protect your emission system. One of the leading causes of ‘check engine’ lights coming on in high mileage cars is actually catalytic converter failure, which can be caused by phosphorous in engine oil. While phosphorous is present in all engine oils for its ability to reduce wear, it is effectively poisonous to catalytic converters. Castrol GTX High Mileage Motor Oil is liquid engineered with Phosphorous Replacement Technology to replace some of the phosphorous with an advanced additive that maintains robust wear protection. When you want to extend the life of your high mileage engine and emission system and find out how many miles you can go on a high-mileage oil, there is no better choice than Castrol GTX High Mileage Motor Oil.

Product Features:
  • Phosphorus Replacement Technology to help extend the life of the emission system
  • Superior dispersancy that fights sludge build up
  • Exceptional oil burn-off protection exceeding industry standards (Based on API and ACEA volatility specifications)
  • Improved fuel economy (In 5W-20, 5W-30 and 10W-30 grades versus industry specifications)
  • Synthetic Blend Composition: Castrol GTX High Mileage Motor Oil is a synthetic blend, offering the benefits of both conventional and synthetic oils for superior engine protection.
  • Extended Engine Life: Designed to protect against sludge, wear, and burn-off, this motor oil helps extend the life of high mileage engines.
  • Optimal Viscosity: With an SAE oil weight of 10W-30, this motor oil provides excellent performance in a wide range of temperatures, ensuring reliable engine protection.
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Castrol – GTX 10W-30 Conventional Motor Oil, Helps Extend Engine Life, 5 Quart (Part No.15B7AA)

GTX 10W-30 Conventional Motor Oil, Helps Extend Engine Life, 5 Quart

from

$29.99
Sludge can block your engine’s vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life. Castrol GTX is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It has evolved to meet the needs of consumers and vehicle manufacturers since 1968 and continues to innovate and remain a trusted brand today. Severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals can all cause the build-up of a thick, tar like substance called sludge. If untreated, it can rob a car’s engine of its power and ultimately its life. GTX is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards. Help Extend the Life of Your Engine with Castrol GTX.

Product Features:
  • Superior protection against engine sludge (When tested in engines with a high level of sludge)
  • Advanced protection against viscosity and thermal breakdown
  • Premium quality base oils and anti-wear additives to help extend the life of your engine
  • Helps minimize oil consumption
  • Proven Longevity: With over 50 years of innovation and trust, Castrol GTX helps extend the life of your engine by protecting against new oil splatter formation better than tough industry standards.
  • Adaptable to Severe Conditions: Designed to perform under severe driving conditions such as heavy traffic, poor fuel quality, and harsh driving environments, ensuring your engine remains powerful and reliable.
  • Premium Conventional Oil: As a premium conventional motor oil, Castrol GTX meets the needs of both consumers and vehicle manufacturers, providing reliable performance and protection.
  • Optimal Viscosity: Featuring an SAE oil weight of 10W-30, Castrol GTX offers optimal viscosity for a wide range of temperatures, ensuring smooth engine operation and protection.
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Valvoline – Full Synthetic High Mileage with MaxLife Technology 10W-30 Engine Oil: Maximizes Engine Life, 5 Quart (Part No.881170)

Full Synthetic High Mileage with MaxLife Technology 10W-30 Engine Oil: Maximizes Engine Life, 5 Quart

from

$37.99
Upgrading your motor oil to Valvoline Full Synthetic High Mileage with MaxLife Technology can help you increase the longevity of your car, truck or SUV with over 75,000 miles. It’s proven to protect your high-mileage motor against wear, friction, heat, and deposits – the leading causes of engine breakdown and expensive repairs. Our exclusive formulation goes beyond industry standards to protect your engine. It’s fortified with enhanced wear additives and friction-fighting agents to safeguard critical engine components, extra detergents to clean inside your engine, and premium seal conditioners to restore aging seals and prevent leaks. Superior viscosity modifiers and high-quality base oils help it perform exceptionally in both high and low temperatures. Engineered with ingenuity, tested with tenacity, and proven with purpose, our formula was innovated in America with a century and a half of hands-on experience from the original motor oil brand.

Product Features:
  • Enhanced maxlife technology prevents engine breakdown in extreme conditions with 50% better wear protection than the industry standard
  • Treat and prevent leaks with premium seal conditioners to keep oil out of places it shouldn’t be
  • 25% extra defense against deposits, sludge, corrosion and rust via interior-cleansing detergents
  • Extreme temperature protection through our high-quality base oils and superior viscosity modifiers
  • Meets or exceeds all requirements of ilsac gf-6a, api sp, api sn with sn plus, api sn
  • High Mileage Protection: Valvoline Full Synthetic High Mileage Engine Oil is specially designed to protect engines with over 75,000 miles against wear, friction, heat, and deposits, ensuring a longer lifespan for your vehicle.
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Castrol – GTX 10W-30 Conventional Motor Oil, Extends Engine Life, 1 Quart (Part No.15B400)

GTX 10W-30 Conventional Motor Oil, Extends Engine Life, 1 Quart

from

$9.99
Sludge can block your engine’s vital oilways like cholesterol and if untreated, can rob an engine of its power and ultimately its life. Castrol GTX is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It has evolved to meet the needs of consumers and vehicle manufacturers since 1968 and continues to innovate and remain a trusted brand today. Severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals can all cause the build-up of a thick, tar like substance called sludge. If untreated, it can rob a car’s engine of its power and ultimately its life. GTX is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards. Help Extend the Life of Your Engine with Castrol GTX.

Product Features:
  • Superior protection against engine sludge (When tested in engines with a high level of sludge)
  • Advanced protection against viscosity and thermal breakdown
  • Premium quality base oils and anti-wear additives to help extend the life of your engine
  • Helps minimize oil consumption
  • Trusted Brand: With over 50 years of innovation and trust, Castrol GTX has evolved to meet the needs of both consumers and vehicle manufacturers since 1968.
  • Adaptable to Severe Conditions: Designed to perform under severe driving conditions such as heavy traffic, poor fuel quality, and harsh driving environments.
  • This premium conventional motor oil, with an SAE oil weight of 10W-30, meets the standard oil class requirements for a wide range of vehicles.
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Castrol – GTX High Mileage Synthetic Blend 10W-30 Motor Oil: Helps Protect Emission Systems, 1 Quart (Part No.149D6C)

GTX High Mileage Synthetic Blend 10W-30 Motor Oil: Helps Protect Emission Systems, 1 Quart

from

$10.49
Castrol® GTX® High Mileage motor oil is the leading consumer high-mileage brand. It’s a synthetic blend motor oil that helps extend the life of your engine by protecting against sludge, wear and burn-off. Castrol GTX High Mileage is also engineered to protect your emission system. One of the leading causes of ‘check engine’ lights coming on in high mileage cars is catalytic converter failure, which can be caused by phosphorous in engine oil. While phosphorous is present in all engine oils for its ability to reduce wear, it is effectively poisonous to catalytic converters. Castrol GTX High Mileage is formulated with Phosphorous Replacement Technology to replace some of the phosphorous with an advanced additive that maintains robust wear protection. When you want to extend the life of your high mileage engine and emission system, there is no better choice than Castrol GTX High Mileage.

Product Features:
  • Phosphorus Replacement Technology to help extend the life of the emission system
  • Superior dispersancy that fights sludge build up
  • Exceptional oil burn-off protection exceeding industry standards (based on API and ACEA volatility specifications)
  • Seal conditioners to help reduce leaks
  • Advanced additives that minimize engine wear
  • Improved fuel economy (in 5W-20, 5W-30 and 10W-30 grades versus industry specifications)
  • Meets or exceeds API SP/SN PLUS/SN and ILSAC GF-6 specs
  • Engine Longevity: Castrol GTX High Mileage motor oil is specifically designed to extend the life of high mileage engines by protecting against sludge, wear, and burn-off.
  • Emission System Protection: Engineered to safeguard your emission system, this motor oil helps prevent catalytic converter failure, a common cause of ‘check engine’ lights in high mileage vehicles.
  • Synthetic Blend Composition: This 10W-30 synthetic blend motor oil offers superior performance and protection compared to conventional oils, making it ideal for high mileage engines.
  • Trusted Brand: As a leading consumer high-mileage brand, Castrol GTX High Mileage provides reliable and effective engine protection, ensuring your vehicle runs smoothly for longer.
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Castrol – EDGE 10W-30 Full Synthetic Motor Oil, 5 Quart (Part No.1598B6)

EDGE 10W-30 Full Synthetic Motor Oil, 5 Quart

from

$37.99
Castrol EDGE 10W-30 Full Synthetic Motor Oil is Castrol’s strongest oil, ideal for drivers seeking the best in sludge protection, wear protection, and maximum engine performance. This oil is 3X stronger against viscosity breakdown than the leading full synthetic, 10X better in high-temperature performance, and offers 6X better wear protection. It meets API SP/SN PLUS, ILSAC GF-6, ACEA A1/B1, GM 6094M, and 4718M standards, and fulfills the engine test requirements of Chrysler MS 6395, ensuring top-tier performance and reliability. Unlock maximum performance with every drive.

Product Features:
  • 3X Stronger against viscosity breakdown than the leading full synthetic – Based on Kurt Orbahn test in 5W-30 grade
  • 10X Better High Temperature performance – As measured in Seq IIIH engine test vs. API SP limit
  • 6X Better Wear Protection – As measured in Seq IVA test vs. latest test limit
  • Meets API SP/SN PLUS, ILSAC GF-6, ACEA A1/B1, GM 6094M and 4718M, Meets engine test requirements of Chrysler MS 6395
  • Advanced Fluid TITANIUM Technology: Incorporates Fluid TITANIUM Technology, making it Castrol’s strongest oil for drivers who demand the best in sludge protection, wear protection, and maximum engine performance.
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Valvoline – Advanced Full Synthetic 10W-30 Motor Oil: Maximizes Engine Life, 5 Quart (Part No.881165)

Advanced Full Synthetic 10W-30 Motor Oil: Maximizes Engine Life, 5 Quart

from

$36.99
Today’s advanced engine technology requires advanced protection. Valvoline Advanced Full Synthetic, the motor oil designed to protect today’s sophisticated engines, contains premium anti-wear additives, superior antioxidants and extra detergents. It protects 40% better against wear, resists oil breakdown 10-times better, and defends 25% more against deposits than industry standards for maximum performance and engine longevity. And with an exceptional range of temperature protection your engine will ready for extreme weather. Valvoline invented motor oil 150 years ago, and we’ve been reinventing it ever since. Get Valvoline Advanced Full Synthetic and give your engine the advanced protection proven to maximize engine life.

Product Features:
  • ADVANCED PROTECTION AGAINST the four main causes of engine breakdown: wear friction heat and deposits
  • 40% BETTER WEAR PROTECTION vs. industry standard as tested in the Sequence IVB engine test
  • 25% BETTER DEPOSIT PROTECTION with superior engine cleaning detergents as tested in the GMOD engine test
  • EXCEPTIONAL HIGH/LOW TEMPERATURE PROTECTION defends your motor no matter the weather conditions
  • MEETS OR EXCEEDS ALL REQUIREMENTS of ILSAC GF-6A, API SP, API SN with SN PLUS, API SN
  • Enhanced Oil Stability: Resists oil breakdown 10-times better than industry standards, providing consistent performance and reliability.
  • Premium Additives: Contains premium anti-wear additives, superior antioxidants, and extra detergents for maximum performance and engine longevity.
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Castrol – GTX Conventional 20W-50 Engine Oil: Helps Protect Against Sludge Build Up, 5 Quart (Part No.15984B)

GTX Conventional 20W-50 Engine Oil: Helps Protect Against Sludge Build Up, 5 Quart

from

$29.99
Castrol GTX is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It continues to innovate to meet the needs of consumers and vehicle manufacturers and remains among the most trusted brands today. Severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals can all cause the build-up of a thick, tar like substance called sludge. If not addressed, it can rob a car’s engine of its power and ultimately its life. GTX is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards.

Product Features:
  • Premium quality base oils and anti-wear additives to help extend the life of your engine
  • Advanced protection against viscosity and thermal breakdown
  • Superior protection against engine sludge (when tested in engines with a high level of sludge)
  • Helps minimize oil consumption
  • Meets ilsac gf-6 specs
  • Unsurpassed thermal breakdown protection: GTX Engine Oil, 20W50 provides superior protection against thermal breakdown, ensuring that your engine stays cool and runs smoothly even under extreme conditions.
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Castrol – EDGE 10W-30 Full Synthetic Motor Oil, 1 Quart (Part No.152E4E)

EDGE 10W-30 Full Synthetic Motor Oil, 1 Quart

from

$11.99
Castrol EDGE 10W-30 Full Synthetic Motor Oil is Castrol’s strongest oil, ideal for drivers seeking the ultimate in sludge protection, wear protection, and engine performance. This oil is 3X stronger against viscosity breakdown than the leading full synthetic, 10X better in high-temperature performance, and offers 6X better wear protection. It meets API SP/SN PLUS, ILSAC GF-6, ACEA A1/B1, GM 6094M and 4718M, and Chrysler MS 6395 engine test requirements, ensuring top-tier performance and reliability. Unlock maximum performance with every drive.

Product Features:
  • 3X Stronger against viscosity breakdown than the leading full synthetic – Based on Kurt Orbahn test in 5W-30 grade
  • 10X Better High Temperature performance – As measured in Seq IIIH engine test vs. API SP limit
  • 6X Better Wear Protection – As measured in Seq IVA test vs. latest test limit
  • Meets API SP/SN PLUS, ILSAC GF-6, ACEA A1/B1, GM 6094M and 4718M, Meets engine test requirements of Chrysler MS 6395
  • Ultimate Sludge and Wear Protection: Castrol EDGE 10W-30 Full Synthetic Motor Oil with Fluid TITANIUM Technology offers superior protection against sludge and wear, ensuring your engine remains clean and efficient.
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Valvoline – High Mileage with MaxLife Technology Synthetic Blend 10W-30 Engine Oil: Maximize Engine Life, 1 Quart (Part No.797976)

High Mileage with MaxLife Technology Synthetic Blend 10W-30 Engine Oil: Maximize Engine Life, 1 Quart

from

$9.99
75,000 miles is more than a mile marker. It’s a signal that your engine is ready for greater protection. That’s when you need Valvoline High Mileage with MaxLife Technology Motor Oil. Its exclusive formula is proven to maximize engine life in cars, trucks, and SUVs with over 75,000 miles. Our mixture is specially developed with a unique combination of synthetic and premium conventional oils to protect your high-mileage motor against wear, friction, heat, and deposits – the four major causes of engine breakdown and expensive repairs. Anti-wear additives defend critical engine components, advanced friction-fighting agents reduce heat and abrasion, added detergents clean the inside of your engine, and premium seal conditioners handle aging seals to prevent leaks. It fights sludge, corrosion and rust that can rob your engine of horsepower, fuel efficiency and longevity. From extreme temperatures and cold starts to stop-and-go traffic and frequent short trips, viscosity modifiers make sure the oil flows more easily, coats more completely, and resists thermal breakdown under even the most intense driving conditions. Its unique mixture curbs contaminants to keep high-mileage engines from burning and consuming oil that can foul spark plugs, creating higher emissions and causing your motor to run roughly.

Product Features:
  • Maxlife technology prevents engine breakdown with 40% better wear protection than the industry standard
  • Refresh aging seals and prevent leaks with seal conditioners
  • Reduce sludge, deposits, corrosion, and rust with added detergents – keep motors clean inside
  • Enhanced friction performance helps maximize power with advanced friction-fighting agents
  • Meets or exceeds all requirements of ilsac gf-6a, api sp, api sn with sn plus, api sn
  • MaxLife High Mileage Synthetic Blend Engine Oil is specially designed for engines with over 75,000 miles, providing greater protection and maximizing engine life.
See More

Castrol – GTX 20W-50 Conventional Motor Oil: Helps Protect Against Sludge Build Up, 1 Quart (Part No.151A8E)

GTX 20W-50 Conventional Motor Oil: Helps Protect Against Sludge Build Up, 1 Quart

from

$9.99
Castrol® GTX® is a premium conventional motor oil that has been helping to extend engine life for over 50 years. It continues to innovate to meet the needs of consumers and vehicle manufacturers and remains among the most trusted brands today. Severe driving conditions such as heavy traffic, poor fuel quality, harsh driving conditions and exceeding oil change intervals can all cause the build-up of a thick, tar like substance called sludge. If not addressed, it can rob a car’s engine of its power and ultimately its life. GTX is specially engineered to prevent harmful build-up of sludge while protecting against new oil splatter formation better than tough industry standards.

Product Features:
  • Premium quality base oils and anti-wear additives to help extend the life of your engine
  • Advanced protection against viscosity and thermal breakdown
  • Superior protection against engine sludge (when tested in engines with a high level of sludge)
  • Helps minimize oil consumption
  • Meets ILSAC GF-6 specs
  • Superior Performance: Exceeds tough industry standards in protecting against new oil splatter formation, providing superior performance and reliability.
  • Versatile Use: Suitable for a variety of driving conditions including heavy traffic, poor fuel quality, and harsh environments, making it a versatile choice for many vehicles.
  • High-Quality Composition: This conventional motor oil with SAE weight 20W-50 offers robust protection and performance, maintaining engine health and efficiency.
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Castrol – EDGE High Mileage 10W-30 Full Synthetic Engine Oil 1 Quart (Part No.15979B)

EDGE High Mileage 10W-30 Full Synthetic Engine Oil 1 Quart

from

$12.99
CASTROL EDGE High Mileage 10W-30 Full Synthetic Motor Oil 1 Quart is the perfect solution for vehicles with over 75K miles. It is formulated with Fluid Titanium Technology and Phosphorus Replacement Technology to provide 10X better high-temperature performance and 6X better wear protection. This motor oil meets API SP/SN PLUS, ILSAC GF-6, GM 6094M standards and offers motor oils that meet OEM specifications. It is available in different grades, including 5W-20, 5W-30, and 10W-30. This motor oil is the natural choice for consumers who want to extend maximum engine performance and preserve the catalytic converter and the emission system. Try CASTROL EDGE High Mileage today and experience the difference in your vehicle’s performance.

Product Features:
  • 10x better high temperature performance – as measured in seq iiih engine test vs. api sp limit
  • 6x better wear protection – as measured in seq iva test vs. latest test limit
  • From the makers of the No. 1 high mileage brand
  • Meets api sp/sn plus, ilsac gf-6, gm 6094m
  • Castrol edge offers engine oils that meet oem specification approvals or licenses that cover over 97.3% of the us car parc.
  • Available in the following grades: 5w-20, 5w-30, 10w-30, and 10w-40
  • Try castrol edge high mileage today
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Valvoline – Advanced Full Synthetic 10W-30 Motor Oil: Maximizes Engine Life, 1 Quart (Part No.VV935)

Advanced Full Synthetic 10W-30 Motor Oil: Maximizes Engine Life, 1 Quart

from

$11.49
Today’s advanced engine technology requires advanced protection. Valvoline Advanced Full Synthetic, the motor oil designed to protect today’s sophisticated engines, contains premium anti-wear additives, superior antioxidants and extra detergents. It protects 40% better against wear, resists oil breakdown 10-times better, and defends 25% more against deposits than industry standards for maximum performance and engine longevity. And with an exceptional range of temperature protection your engine will ready for extreme weather. Valvoline invented motor oil 150 years ago, and we’ve been reinventing it ever since. Get Valvoline Advanced Full Synthetic and give your engine the advanced protection proven to maximize engine life.

Product Features:
  • ADVANCED PROTECTION AGAINST the four main causes of engine breakdown: wear friction heat and deposits
  • 40% BETTER WEAR PROTECTION vs. industry standard as tested in the Sequence IVB engine test
  • 25% BETTER DEPOSIT PROTECTION with superior engine cleaning detergents as tested in the GMOD engine test
  • EXCEPTIONAL HIGH/LOW TEMPERATURE PROTECTION defends your motor no matter the weather conditions
  • MEETS OR EXCEEDS ALL REQUIREMENTS of ILSAC GF-6A, API SP, API SN with SN PLUS, API SN
  • Enhanced Oil Stability: This motor oil resists oil breakdown 10 times better than industry standards, providing consistent performance and reliability.
  • Premium Additives: Contains premium anti-wear additives, superior antioxidants, and extra detergents to maintain engine health and efficiency.
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Castrol – Conventional 30W Engine Oil – Protects against thermal breakdown – 1 Qt (Part No.151B00)

Conventional 30W Engine Oil - Protects against thermal breakdown - 1 Qt

from

$8.49
Castrol Conventional 30W Engine Oil is a high-quality monograde oil that provides maximum engine wear protection. It contains dispersants, antioxidants, detergents, and other additives that help to keep the engine clean and running smoothly. This heavy-duty formula is engineered to provide greater protection against thermal breakdown, which can cause engine damage and reduce performance. Castrol Conventional 30W Engine Oil exceeds all passenger car and light-truck manufacturer’s warranty requirements and is made in the USA. It is an ideal choice for those who want to keep their engines running smoothly and efficiently. Protect your engine against thermal breakdown with Castrol Conventional 30W Engine Oil.

Product Features:
  • Heavy-duty formula provides maximum engine wear protection in warm climates; designed for use in temperatures above 40 Deg. F
  • Contains dispersants, antioxidants, detergents and varnish inhibitors that help prevent ring-sticking and build up of harmful engine deposits
  • Engineered for greater protection against thermal breakdown
  • Exceeds all passenger car and light-truck manufacturers’ warranty requirements for the protection of gasoline and turbocharged engines where api sm, sl, sj or sh is recommended
  • Made in the usa
  • Thermal Protection: GTX Engine Oil, SAE 30 provides superior protection against thermal breakdown, ensuring your engine stays cool and running smoothly.
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Valvoline – High Mileage with MaxLife Technology Synthetic Blend 10W-30 Motor Oil: Maximize Engine Life, 5 Quart (Part No.779462)

High Mileage with MaxLife Technology Synthetic Blend 10W-30 Motor Oil: Maximize Engine Life, 5 Quart

from

$31.99
75,000 miles is more than a mile marker. It’s a signal that your engine is ready for greater protection. That’s when you need Valvoline High Mileage with MaxLife Technology Motor Oil. Its exclusive formula is proven to maximize engine life in cars, trucks, and SUVs with over 75,000 miles. Our mixture is specially developed with a unique combination of synthetic and premium conventional oils to protect your high-mileage motor against wear, friction, heat, and deposits – the four major causes of engine breakdown and expensive repairs. Anti-wear additives defend critical engine components, advanced friction-fighting agents reduce heat and abrasion, added detergents clean the inside of your engine, and premium seal conditioners handle aging seals to prevent leaks. It fights sludge, corrosion and rust that can rob your engine of horsepower, fuel efficiency and longevity. From extreme temperatures and cold starts to stop-and-go traffic and frequent short trips, viscosity modifiers make sure the oil flows more easily, coats more completely, and resists thermal breakdown under even the most intense driving conditions. Its unique mixture curbs contaminants to keep high-mileage engines from burning and consuming oil that can foul spark plugs, creating higher emissions and causing your motor to run roughly.

Product Features:
  • MAXLIFE TECHNOLOGY PREVENTS engine breakdown with 40% better wear protection than the industry standard
  • REFRESH AGING SEALS AND PREVENT LEAKS with seal conditioners
  • REDUCE SLUDGE, DEPOSITS, CORROSION, AND RUST with added detergents – keep motors clean inside
  • ENHANCED FRICTION PERFORMANCE HELPS MAXIMIZE POWER with advanced friction-fighting agents
  • MEETS OR EXCEEDS ALL REQUIREMENTS of ILSAC GF-6A, API SP, API SN with SN PLUS, API SN
  • MaxLife Technology: Valvoline High Mileage with MaxLife Technology is specially formulated to maximize engine life in vehicles with over 75,000 miles, providing superior protection against wear, friction, heat, and deposits.
  • Synthetic Blend Composition: This motor oil features a unique combination of synthetic and premium conventional oils, ensuring optimal performance and protection for high-mileage engines.
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Mobil Super – 10W-30 Full Synthetic Motor Oil, 1 Quart (Part No.27737)

10W-30 Full Synthetic Motor Oil, 1 Quart

from

$8.49
Mobil Super Synthetic 10W-30 full synthetic motor oils are engineered to provide outstanding engine protection in a wide variety of weather and driving conditions. Mobil Super helps to protect critical engine parts across a broad range of temperatures (up to 400 degrees Fahrenheit) without oxidative oil thickening and oil breakdown. Mobil Super Synthetic oils are specially formulated to help protect engines of all ages, and allows easy starting and rapid oil circulation during cold starts to protect critical engine parts. Meets or exceeds the latest industry specifications and API SN resource conserving. For our ultimate in performance and protection, consider our Mobil 1 motor oils, a family of advanced full synthetic engine oil.

Product Features:
  • Full synthetic motor oil engineered to provide outstanding engine protection for vehicles of all ages in a wide variety of weather and driving conditions
  • Helps to protect critical engine parts across a broad range of temperatures (up to 400 degrees F) without oxidative oil thickening and oil breakdown
  • Specially formulated to help easy starting and rapid oil circulation during cold starts to protect critical engine parts
  • Helps to control oil consumption and loss and provides protection beyond our conventional-synthetic blended products
  • Meets or exceeds the latest industry specifications and API SN resource conserving
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Mobil Super – 10W-30 Synthetic Blend Motor Oil, 5 Quart (Part No.98008)

10W-30 Synthetic Blend Motor Oil, 5 Quart

from

$25.99
Mobil Super 10W-30 Synthetic Blend motor oil helps to extend your engine life and provide engine protection up to 5,000 miles for gasoline cars and light-duty trucks. Mobil Super has 15 percent extra cleaning additives to help prevent the formation of sludge and deposits when compared to Mobil conventional motor oil. Helps to get your engine cleaner, conserve viscosity for easier cold starting, and provide outstanding engine wear protection under a variety of operating conditions. Meets or exceeds the requirements of: API SN, SM, SL, API SN Plus.

Product Features:
  • Mobil Super Synthetic Blend motor oil 10W-30 works to protect your engine from sludge and deposits for up to 5,000 miles
  • Helps to keep your engine clean with 15 percent extra cleaning additives, preventing sludge and deposit formation
  • Works to provide outstanding engine wear protection under a variety of operating conditions
  • Enhanced formulation (vs. Mobil basic conventional oil) helps to conserves oil viscosity for easier cold starting
  • Recommended for gasoline cars and light-duty trucks
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Mobil Super – 10W-30 Synthetic Blend Motor Oil, 1 Quart (Part No.97025)

10W-30 Synthetic Blend Motor Oil, 1 Quart

from

$5.89
Mobil Super 10W-30 Synthetic Blend motor oil helps to extend your engine life and provide engine protection up to 5,000 miles for gasoline cars and light-duty trucks. Mobil Super has 15 percent extra cleaning additives to help prevent the formation of sludge and deposits when compared to Mobil conventional motor oil. Helps to get your engine cleaner, conserve viscosity for easier cold starting, and provide outstanding engine wear protection under a variety of operating conditions. Meets or exceeds the requirements of: API SN, SM, SL, API SN Plus.

Product Features:
  • Mobil Super Synthetic Blend motor oil 10W-30 works to protect your engine from sludge and deposits for up to 5,000 miles
  • Helps to keep your engine clean with 15 percent extra cleaning additives, preventing sludge and deposit formation
  • Works to provide outstanding engine wear protection under a variety of operating conditions
  • Enhanced formulation (vs. Mobil basic conventional oil) helps to conserves oil viscosity for easier cold starting
  • Recommended for gasoline cars and light-duty trucks
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Castrol – EDGE High Mileage 10W-30 Advanced Full Synthetic Engine Oil: 5 Qt (Part No.15906F)

EDGE High Mileage 10W-30 Advanced Full Synthetic Engine Oil: 5 Qt

from

$38.99
Castrol EDGE High Mileage with Fluid TITANIUM Technology is the natural choice for drivers who demand maximum performance from their high mileage cars, which often operate at extreme temperatures. Castrol EDGE High Mileage provides up to 10X better high temperature performance than the latest industry standard to ensure optimal protection and oil flow over the drive cycle. As your car ages, it can lose performance and efficiency and is also more prone to catalytic converter failure. Castrol EDGE High Mileage is liquid engineered with Phosphorous Replacement Technology to reduce harmful phosphorus to protect the catalytic converter and preserve the life of your emission system. Castrol EDGE High Mileage helps your car defy its miles and extend maximum performance.

Product Features:
  • Patented phosphorus replacement technology to help extend the life of your emission system
  • 10x better high temperature performance (as measured in sequence iiih engine test vs. api sp test limit)
  • 6x better wear protection (as measured in latest sequence iva engine test)
  • 1.4x better sludge protection (as measured in sequence vh engine test vs. api sp test limit)
  • Maximum Performance: Castrol EDGE High Mileage Engine Oil is designed to provide maximum performance for high mileage cars that often operate at extreme temperatures.
  • Improved High Temperature Performance: With up to 10X better high temperature performance than the latest industry standard, Castrol EDGE High Mileage Engine Oil ensures optimal protection and oil flow over the drive cycle.
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FRAM – Conventional 10W30 Engine Oil with Low-Speed Pre-Ignition Control – 5 Qt (Part No.F630-5QT)

Conventional 10W30 Engine Oil with Low-Speed Pre-Ignition Control - 5 Qt

from

$25.99
FRAM Engine Oil SAE 10W-30 utilizes a blend of high-quality conventional base stocks coupled with a robust additive system to provide reliable engine protection across a broad range of operating conditions. Specifically formulated for use in modern gas-direct engines (GDI) and turbo gas-direct engines (TGDI) as well as older carbureted or normally fuel injected gasoline engine designs. FRAM Engine Oil SAE 5W-30 contains additive technology designed to prevent low-speed pre-ignition (LSPI) while also providing increased wear protection, oxidation and shear stability over previous oil categories. FRAM Engine Oil SAE 10W-30 meets the requirements for API SP, SN Plus, SN, SM and ILSAC GF-6A, GF-5 and earlier API and ILSAC Service Categories.

Product Features:
  • Low-speed pre-ignition control
  • Chain wear protection
  • Piston cleanliness
  • Turbo-compatibility
  • Always refer to your vehicles operating manual to select the correct grade oil for your engine.
  • Suitable for modern engines: Specifically formulated for use in modern gas-direct engines (GDI) and turbo gas-direct engines (TGDI) as well as older carbureted or normally fuel injected gasoline engine designs.
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FRAM – 10W-30 High Mileage Conventional Motor Oil, Reduces Oil Consumption, 5 Quart (Part No.F665-5QT)

10W-30 High Mileage Conventional Motor Oil, Reduces Oil Consumption, 5 Quart

from

$25.99
FRAM Conventional High Mileage 10W30 Engine Oil is specially designed with enhanced  additives to help reduce leaks and oil consumption in worn or higher mileage engines. This oil is formulated to help clean out sludge buildup and keep engines running clean and with  increased efficiency and power. They are specially designed for engines with over 75,000 miles. FRAM Conventional High Mileage 10W30 Engine Oil will protect domestic and imported vehicles and equipment powered with either gasoline or light duty diesel engines – even those that are turbo charged or super-charged. This high-quality oil is specifically formulated to meet or exceed  all new car manufacturers’ warranty requirements as well as the stringent industry standards API  SP/CF, and 10W30 grade will also meet or exceed the ILSAC GF-6A Resource Conserving Service Category.

Product Features:
  • Formulated with a unique combination of premium base oils and an enhanced additive system
  • Provides increased protection in higher mileage engines
  • Helps restore seal condition to reduce oil consumption
  • Increases protection against high temperature deposits and ring sticking
  • ALWAYS REFER TO YOUR VEHICLES OPERATING MANUAL TO SELECT THE CORRECT GRADE OIL FOR YOUR ENGINE.
  • Sludge Cleanup and Engine Efficiency: Formulated to help clean out sludge buildup, keeping engines running clean with increased efficiency and power.
  • Versatile Compatibility: Protects domestic and imported vehicles and equipment powered by gasoline or light-duty diesel engines, including turbocharged and supercharged engines.
  • Meets Stringent Standards: Formulated to meet or exceed all new car manufacturers’ warranty requirements and stringent industry standards API SP/CF, and ILSAC GF-6A Resource Conserving Service Category.
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FRAM – 10W-30 Conventional Motor Oil, Prevents Low-Speed Pre-Ignition, 1 Quart (Part No.F630)

10W-30 Conventional Motor Oil, Prevents Low-Speed Pre-Ignition, 1 Quart

from

$6.49
FRAM Engine Oil SAE 10W-30 utilizes a blend of high-quality conventional base stocks coupled with a robust additive system to provide reliable engine protection across a broad range of operating conditions. Specifically formulated for use in modern gas-direct engines (GDI) and turbo gas-direct engines (TGDI) as well as older carbureted or normally fuel injected gasoline engine designs. FRAM Engine Oil SAE 10W-30 contains additive technology designed to prevent low-speed pre-ignition (LSPI) while also providing increased wear protection, oxidation and shear stability over previous oil categories. FRAM Engine Oil SAE 10W-30 meets the requirements for API SP, SN Plus, SN, SM and ILSAC GF-6A, GF-5 and earlier API and ILSAC Service Categories.

Product Features:
  • Low-Speed Pre-Ignition Control
  • Chain Wear Protection
  • Piston Cleanliness
  • Turbo-Compatibility
  • ALWAYS REFER TO YOUR VEHICLES OPERATING MANUAL TO SELECT THE CORRECT GRADE OIL FOR YOUR ENGINE.
  • Versatile Compatibility: Specifically formulated for use in modern gas-direct engines (GDI) and turbo gas-direct engines (TGDI), as well as older carbureted or normally fuel-injected gasoline engine designs.
  • High-Quality Conventional Base Stocks: Utilizes a blend of high-quality conventional base stocks to ensure reliable engine protection across a broad range of operating conditions.
  • Meets Stringent Standards: Complies with API SP, SN Plus, SN, SM, and ILSAC GF-6A, GF-5, and earlier API and ILSAC Service Categories, ensuring it meets the latest industry requirements.
  • SAE oil weight of 10W-30, making it a dependable choice for various engine types.
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FRAM – Full Synthetic High Mileage 10W-30 Motor Oil: 5 Quart (Part No.F943-5QT)

Full Synthetic High Mileage 10W-30 Motor Oil: 5 Quart

from

$28.99
FRAM Full Synthetic High Mileage SAE 10W-30 is a full synthetic motor oil blended with high quality synthetic base stocks and and enhanced additives that meet the stringent API: SP, SN, SM, SL, SJ, and ILSAC GF-6A specifications while reducing leaks and oil consumption in worn or higher mileage engines. Formulated with synthetic base stocks, this oil offers increased oxidation inhibition performance as well as increased high and low temperature performance when compared against conventional oils. The FRAM Full Synthetic High Mileage SAE 10W-30 is formulated to help clean out sludge buildup and keep engines running clean and with increased efficiency and power. Specially designed for engines with over 75,000 miles, the FRAM Full Synthetic High Mileage SAE 10W-30 provides the ultimate protection for your higher mileage engine. Specifically formulated for the rigorous environment of gas-direct engine (GDI) and turbo gas-direct engine (TGDI) designs as well as providing increased protection for carbureted or normally fuel injected engines. FRAM Full Synthetic High Mileage SAE 10W-30 contains additive technology designed to prevent low-speed pre-ignition (LSPI). LSPI can lead to pre-mature engine failure and is a major concern of the automotive industry for vehicles employing GDI or TGDI technology. This oil also provides increased wear protection, oxidation and shear stability for higher mileage vehicles over previous oil categories.

Product Features:
  • Faster oil flow at start-up
  • Fuel efficiency gains over heavier grade oils
  • Reduces oil cumsumption
  • Excellent sludge and varnish protection
  • Slows engine leaks
  • Outstanding thermal and oxidation stability
  • Lowers oil vaporization and consumption at extreme conditions
  • ALWAYS REFER TO YOUR VEHICLES OPERATING MANUAL TO SELECT THE CORRECT GRADE OIL FOR YOUR ENGINE.
  • Engine Cleaning and Efficiency: Helps clean out sludge buildup, keeping engines running clean with increased efficiency and power, ideal for engines with over 75,000 miles.
  • Advanced LSPI Prevention: Contains additive technology designed to prevent low-speed pre-ignition (LSPI), a major concern for vehicles with gas-direct engine (GDI) and turbo gas-direct engine (TGDI) designs.
  • Comprehensive Engine Protection: Provides increased wear protection, oxidation, and shear stability for higher mileage vehicles, meeting stringent API: SP, SN, SM, SL, SJ, and ILSAC GF-6A specifications.
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FRAM – 10W-30 Full Synthetic Motor Oil, Ultimate Protection, 5 Quarts (Part No.F940-5QT)

10W-30 Full Synthetic Motor Oil, Ultimate Protection, 5 Quarts

from

$27.99
FRAM Engine Oil Full Synthetic SAE 10W-30 is a full synthetic motor oil blended with high  quality synthetic base stocks and the latest additive technology to provide the ultimate protection  for your engine. Specifically formulated for the rigorous environment of gas-direct engine (GDI)  and turbo gas-direct engine (TGDI) designs as well as providing increased protection for  carbureted or normally fuel injected engines. FRAM Engine Oil Full Synthetic SAE 10W-30  contains additive technology designed to prevent low-speed pre-ignition (LSPI). LSPI can lead  to pre-mature engine failure and is a major concern of the automotive industry for vehicles  employing GDI or TGDI technology. This oil also provides increased wear protection, oxidation  and shear stability over previous oil categories.

Product Features:
  • Outstanding thermal and oxidation stability
  • Excellent sludge and varnish protection
  • Faster oil flow at start-up
  • Volatility: Lowers oil vaporization and consumption at extreme conditions
  • ALWAYS REFER TO YOUR VEHICLES OPERATING MANUAL TO SELECT THE CORRECT GRADE OIL FOR YOUR ENGINE.
  • Ultimate Engine Protection: FRAM Engine Oil Full Synthetic SAE 10W-30 is formulated with high-quality synthetic base stocks and the latest additive technology to provide the ultimate protection for your engine.
  • Advanced LSPI Prevention: Contains additive technology specifically designed to prevent low-speed pre-ignition (LSPI), a major concern for vehicles with gas-direct injection (GDI) and turbo gas-direct injection (TGDI) engines.
  • Enhanced Wear Protection: Offers increased wear protection, ensuring your engine components remain in optimal condition even under rigorous driving conditions.
  • Versatile Engine Compatibility: Suitable for a wide range of engines, including GDI, TGDI, carbureted, and normally fuel-injected engines, making it a versatile choice for various vehicle types.
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FRAM – High Milage Conventional 10W30 Engine Oil – Helps Restore Seal Condition – 1 Qt (Part No.F665)

High Milage Conventional 10W30 Engine Oil - Helps Restore Seal Condition - 1 Qt

from

$6.49
FRAM Conventional High Mileage 10W30 Engine Oil is specially designed with enhanced  additives to help reduce leaks and oil consumption in worn or higher mileage engines. This oil is formulated to help clean out sludge buildup and keep engines running clean and with  increased efficiency and power. They are specially designed for engines with over 75,000 miles.  FRAM Conventional High Mileage 10W30 Engine Oil will protect domestic and imported vehicles and  equipment powered with either gasoline or light duty diesel engines – even those that are turbo charged or super-charged. This high-quality oil is specifically formulated to meet or exceed  all new car manufacturers’ warranty requirements as well as the stringent industry standards API  SP/CF, and 10W30 grade will also meet or exceed the ILSAC GF-6A Resource Conserving Service Category.

Product Features:
  • Formulated with a unique combination of premium base oils and an enhanced additive system
  • Provides increased protection in higher mileage engines
  • Helps restore seal condition to reduce oil consumption
  • Increases protection against high temperature deposits and ring sticking
  • Always refer to your vehicles operating manual to select the correct grade oil for your engine.
  • Specially formulated for high mileage engines: FRAM High Mileage 10W30 Engine Oil is designed with enhanced additives to help reduce leaks and oil consumption in worn or higher mileage engines, making it the perfect choice for vehicles with over 75,000 miles.
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FRAM – Straight-Viscosity 30W Conventional Engine Oil, Reduces Engine Wear, 1 Quart (Part No.F530)

Straight-Viscosity 30W Conventional Engine Oil, Reduces Engine Wear, 1 Quart

from

$6.49
FRAM Engine Oil SAE 30 is single grade or straight-viscosity motor oil that meets the stringent API SP, SN Plus / SN, SM, SL & CF specifications. It contains a balanced blend of high VI base stocks and an advanced additive package to deliver superior performance. It is designed to provide thermal and oxidation stability, deposit control, anti-wear protection, corrosion protection and improved pumpability. FRAM Engine Oil SAE 30 may be used in turbo-charged or naturally aspirated foreign and domestic engines recommending straight weight API SP/CF quality oil. This motor oil exceeds the stringent lubricating performance requirements of American, European, Korean, Japanese and other worldwide engine manufacturers where straight weight engine oil is recommended.

Product Features:
  • Resists breakdown in severe engine environments
  • Effectively prevents the formation of sludge and varnish deposits
  • Reduces engine wear
  • Turbo approved
  • Always refer to your vehicles operating manual to select the correct grade oil for your engine.
  • Superior Performance: FRAM Engine Oil SAE 30 is formulated with a balanced blend of high VI base stocks and advanced additives to deliver superior performance, ensuring your engine runs smoothly and efficiently.
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FRAM – 10W-30 Small Engine 10W-30 Conventional Oil: 1 Quart (Part No.464-32)

10W-30 Small Engine 10W-30 Conventional Oil: 1 Quart

from

$7.29
10W-30 Small Engine 10W-30 Conventional Oil: 1 Quart

FRAM – 30W Small Engine 30W Conventional Oil: 1 Quart (Part No.463-32)

30W Small Engine 30W Conventional Oil: 1 Quart

from

$7.29
30W Small Engine 30W Conventional Oil: 1 Quart

FAQs for 1991 Isuzu Impulse Engine Oil

What are the most popular Engine Oil for the 1991 Isuzu Impulse?

With 4 brands you can trust, our most popular Engine Oil for the 1991 Isuzu Impulse parts are:
Conventional 10W30 Engine Oil with Low-Speed Pre-Ignition Control - 5 Qt
from $25.99
This product is not rated
Conventional 10W30 Engine Oil with Low-Speed Pre-Ignition Control – 5 Qt
Engine Oil
10W-30 High Mileage Conventional Motor Oil, Reduces Oil Consumption, 5 Quart
from $25.99
This product is not rated
10W-30 High Mileage Conventional Motor Oil, Reduces Oil Consumption, 5 Quart
Engine Oil

What are the best aftermarket Engine Oil for the 1991 Isuzu Impulse?

See what past customers had to say about our highest-rated Engine Oil for the 1991 Isuzu Impulse:
GTX 10W-30 Conventional Motor Oil, Helps Extend Engine Life, 5 Quart
from $29.99
(220)
GTX 10W-30 Conventional Motor Oil, Helps Extend Engine Life, 5 Quart
“Keeps my cars running great.”