1991 Pontiac Grand Prix Motor Oil

Essential 1991 Pontiac Grand Prix Motor Oil

Castrol – GTX High Mileage 5W-30 Synthetic Blend Engine Oil: 5 Quart (Part No.15980E)

GTX High Mileage 5W-30 Synthetic Blend Engine 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)
  • Provides extra protection for older vehicles: Castrol GTX High Mileage Engine Oil is specifically designed to provide extra protection for high mileage engines, helping to extend the life of your vehicle.
  • Synthetic blend composition: This engine oil is a synthetic blend, combining the benefits of both conventional and synthetic oils to provide superior protection against sludge, wear, and burn-off.
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Mobil 1 – High Mileage Full Synthetic 5W-30 Motor Oil, Protection for 10K miles, 5 Quart (Part No.120769)

High Mileage Full Synthetic 5W-30 Motor Oil, Protection for 10K miles, 5 Quart

from

$38.99
Give your higher mileage engine the care it deserves with Mobil 1 High Mileage full-synthetic motor oil 0W-20. This formula utilizes Mobil 1s signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness to vehicles with over 75,000 miles. Mobil 1 High Mileage motor oil extends engine life by reducing friction and preventing deposits and sludge buildup-keeping critical engine parts clean and protected for up to 10,000 miles between oil changes. (1) Mobil 1 helps to keep your engine running at lower temperatures (2) and is proven to cool engine temperatures by over 10%. (3) Mobil 1 High Mileage full-synthetic motor oil 5W-30 also helps control oxidation to prevent oil breakdown and is recommended by ExxonMobil for all types of modern cars, SUVs, light vans, and light trucks-including those with high-performance, turbocharged, supercharged, multi-valve, or fuel-injected engines. Mobil 1 is Americas#1 selling synthetic motor oil brand at retail, (4) trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR. ( (1) Protects for up to 10,000 miles or 1 year, whichever comes first. To learn more about the Mobil 1 Limited Warranty, visit Mobil.US. (2) Compared to conventional oil. (3) Based on proprietary engine testing, results may vary. (4) Source: The NPD Group/ Retail Tracking Service/ Dollar Sales/ PCMO full-synthetic/ 52 weeks ending July 1, 2023)

Product Features:
  • Mobil 1 High Mileage full-synthetic motor oil 5W-30 is designed for engines with over 75,000 miles to go up to 10,000 miles between oil changes.(1)
  • Utilizes Mobil 1s signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness
  • Meets ILSAC GF-6 standards to help provide low-speed pre-ignition (LSPI) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy
  • Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -30 degrees F)
  • Mobil 1 is specially formulated to help remove sludge and lower engine temperatures
  • Manufacturer Part Number: 120769
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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 – 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 – Conventional 5W20 Engine Oil with Low-Speed Pre-Ignition Control – 1 Qt (Part No.F610)

Conventional 5W20 Engine Oil with Low-Speed Pre-Ignition Control - 1 Qt

from

$6.49
FRAM Engine Oil SAE 5W-20 utilizes a blend of high-quality conventional and synthetic 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-20 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 5W-20 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.
  • Reliable engine protection: FRAM Conventional Oil 5W20 1 QT utilizes a blend of high-quality conventional and synthetic base stocks coupled with a robust additive system to provide reliable engine protection across a broad range of operating conditions.
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FRAM – Full Synthetic 5W-20 Motor Oil: 1 Quart (Part No.F920)

Full Synthetic 5W-20 Motor Oil: 1 Quart

from

$7.49
FRAM Engine Oil Full Synthetic SAE 5W-20 is a full synthetic motor oil blended with high quality synthetic base stocks and the latest additive technology to meet the stringent API: SP, SN, SM, SL, SJ, GM dexos®1 Gen 2 and ILSAC GF-6A specifications 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 5W-20 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. FRAM Engine Oil Full Synthetic SAE 5W-20 and is a fully licensed GM dexos®1 Gen 2 motor oil.

Product Features:
  • Faster oil flow at start-up
  • Fuel efficiency gains over heavier grade oils
  • Excellent sludge and varnish protection
  • 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.
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Castrol – EDGE High Mileage 5W-30 Full Synthetic Engine Oil 1 Quart (Part No.15979F)

EDGE High Mileage 5W-30 Full Synthetic Engine Oil 1 Quart

from

$12.99
CASTROL EDGE High Mileage 5W-30 Full Synthetic Motor Oil 1 Quart is the perfect choice for vehicles with over 75K miles. It is formulated with Fluid Titanium Technology that provides 10X better high-temperature performance and 6X better wear protection. The oil is designed with Phosphorus Replacement Technology that preserves the catalytic converter and the emission system. It meets API SP/SN PLUS, ILSAC GF-6, GM dexos1 Gen 2, and other OEM specifications. Castrol EDGE High Mileage is a full synthetic motor oil that offers superior performance and protection for high mileage engines. It is available in different grades, including 5W-20, 5W-30, and 10W-30. Try Castrol EDGE High Mileage today and extend the life of your engine.

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 dexos1 gen 2, meets ford wss-m2c961-a1 and wss-m2c946-b1, meets engine test requirements of chrysler ms 6395 and 13340
  • 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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Shell – Rotella® T4 Triple Protection® 10W-30 Conventional Heavy Duty Diesel Engine Oil, 1 Gallon (Part No.550045144)

Rotella® T4 Triple Protection® 10W-30 Conventional Heavy Duty Diesel Engine Oil, 1 Gallon

from

$25.99
Formerly known as Shell Rotella® T Triple Protection, Shell Rotella® T4 Triple Protection 10W-30 Diesel Engine Oil is the most technically advanced Shell Rotella® formulation ever. This heavy-duty engine oil has been formulated to provide Triple Protection technology against wear, deposits and oil breakdown. It uses advanced additive technology to protect under the most severe engine conditions found in modern, low-emission engines. Plus, it provides outstanding wear protection, emissions system compatibility and shear stability. Outstanding Wear Protection: Shell Rotella® T4 10W-30 provides exceptional wear protection to help maximize engine efficiency and prolong engine life. Severe Duty Heavy Duty Diesel Engines: Shell Rotella® T4 10W-30 Triple Protection provides outstanding protection for virtually all heavy-duty diesel engines, including engines with the latest emission control using EGR and containing a Diesel Particular Filter. Off-Highway Applications: Shell Rotella® T4 10W-30 Heavy Duty Engine Oil is suitable for use in agricultural, mining, logging, and construction applications, even with high levels of fuel sulfur. Hardworking Diesel Engines: Suitable for use in diesel pick-up trucks. For technical questions, contact our Technical Help Desk at 1-(800) BEST-OIL or (800) 237-8645 Option 3, 1; or with complete Year/Make/Model information for a recommendation.z

Product Features:
  • Provides Triple Protection® against wear, deposits and oil breakdown for most heavy-duty engines
  • Conventional Diesel Engine Oil formulated with advanced additive technology for enhanced deposit protection to help keep engines cleaner over the oil drain interval
  • Provides increased shear stability for better viscosity control and optimal engine oil pressure compared to the previous formulation
  • Protects your bottom line with a lower viscosity that allows for less engine resistance for improved fuel economy compared to an SAE 15W-40
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Castrol – GTX High Mileage Synthetic Blend 5W-30 Engine Oil: Helps Protect Emission Systems, 1 Quart (Part No.149D6A)

GTX High Mileage Synthetic Blend 5W-30 Engine 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, ilsac gf-6 and latest ford specs
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FRAM – Full Synthetic High Mileage 5W-30 Engine Oil: 5 Quart (Part No.F933-5QT)

Full Synthetic High Mileage 5W-30 Engine Oil: 5 Quart

from

$28.99
FRAM Full Synthetic High Mileage SAE 5W-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 5W-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 5W-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 5W-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.
See More

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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Castrol – EDGE Extended Performance 5W-20 Advanced Full Synthetic Motor Oil: 5 Qt (Part No.1598EF)

EDGE Extended Performance 5W-20 Advanced Full Synthetic Motor Oil: 5 Qt

from

$41.99
Castrol EDGE Extended Performance with Fluid TITANIUM Technology is Castrol’s most advanced full synthetic and the natural choice for drivers who demand outstanding performance and the assurance of protection during today’s longer drain intervals. It provides protection for 20,000 miles or a full year – guaranteed. Castrol EDGE Extended Performance features some of the best attributes of Castrol’s patented Fluid TITANIUM Technology that transforms its structure to be stronger under pressure. It helps keep metal apart to fight power-robbing friction, providing wear protection 6X better than required by the industry standard, while protecting under extreme conditions with 10X better high temperature performance.  Castrol EDGE Extended Performance provides the strength to extend drains for 20,000 miles and the muscle to maintain viscosity stability under the extreme force of the engine and protection from wear.  Unlock maximum engine performance.

Product Features:
  • Extended drain interval of 20,000 miles or a full year (Whichever comes first)
  • 10X Better High Temperature performance (As measured in Sequence IIIH engine test vs. API SP test limit)
  • 6X Better Wear Protection (As measured in the latest Sequence IVA engine test)
  • 1.4X Better Sludge Protection (As measured in Sequence VH engine test vs. API SP test limit)
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Castrol – GTX Ultraclean 5W-30 Synthetic Blend Motor Oil: 5 Quart (Part No.15A66D)

GTX Ultraclean 5W-30 Synthetic Blend Motor Oil: 5 Quart

from

$29.99
Environmental factors such as poor fuel quality, hot weather and stop-start driving conditions can lead to sludge, varnish and carbon build-up in your engine: three factors that reduce engine life, power and fuel economy. Castrol Ultraclean is a synthetic blend engine oil available in 0W-20, 5W-20 and 5W-30 grades. Its double-action formula has been proven to clean away the sludge that can block engine oilways* and helps prevent new sludge formation thanks to its synthetic technology. In fact, it provides up to 1.4X better sludge protection than is demanded by the latest industry standard. If keeping your engine clean is important to you, it’s good to know that no other oil keeps engines cleaner.

Product Features:
  • 1.4X superior sludge protection compared to tough industry standards (As measured in the Sequence VH Sludge test vs. API SP test limits)
  • Advanced protection against viscosity and thermal breakdown
  • Superior protection against high-temperature deposits
  • Premium-quality base oils and anti-wear additives that help extend the life of your engine
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FRAM – High Milage Conventional 5W30 Engine Oil – Helps Restore Seal Condition – 1 Qt (Part No.F660)

High Milage Conventional 5W30 Engine Oil - Helps Restore Seal Condition - 1 Qt

from

$6.49
FRAM Conventional High Mileage 5W30 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 5W30 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 5W30 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 engines with over 75,000 miles to help reduce leaks and oil consumption.
See More

FRAM – Conventional 5W30 Engine Oil with Low-Speed Pre-Ignition Control – 1 Qt (Part No.F620)

Conventional 5W30 Engine Oil with Low-Speed Pre-Ignition Control - 1 Qt

from

$6.49
FRAM Engine Oil SAE 5W-30 utilizes a blend of high-quality conventional and synthetic 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 5W-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.
  • Reliable engine protection: FRAM Conventional Oil 5W30 1 QT utilizes a blend of high-quality conventional and synthetic base stocks coupled with a robust additive system to provide reliable engine protection across a broad range of operating conditions.
See More

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
See More

FRAM – Conventional 20W-50 Motor Oil: 1 Quart (Part No.F650)

Conventional 20W-50 Motor Oil: 1 Quart

from

$6.49
FRAM Engine Oil SAE 20W-50 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 20W-50 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 20W-50 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.
See More

FRAM – High Mileage 10W-30 Motor Oil: 5 Quart (Part No.F665-5QT)

High Mileage 10W-30 Motor Oil: 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.
See More

Castrol – EDGE 5W-30 Advanced Full Synthetic Engine Oil: 5 Quart (Part No.1598B1)

EDGE 5W-30 Advanced Full Synthetic Engine Oil: 5 Quart

from

$37.99
Castrol EDGE with Fluid TITANIUM Technology is Castrol’s strongest oil and the natural choice for drivers who want the best combination of sludge protection, wear protection and maximum engine performance. Unlock maximum performance with every drive. Today’s engines are smaller, more powerful and under more pressure than ever before. Castrol EDGE has been engineered to withstand the stress of modern engines and provides 10X better high temperature performance than the latest industry standard. Did you know that friction can waste up to 10% of an engine’s performance? Increased demands placed on the engine to deliver power and fuel efficiency create intense friction between critical engine parts. Castrol EDGE transforms its structure under pressure to keep metal apart and reduce friction for maximum engine performance and delivers 6X better wear protection than required by the latest Sequence IVA test limits.

Product Features:
  • 3x stronger against viscosity breakdown than leading full synthetic (based on kurt orbahn test in 5W-30 grade)
  • 10x better high temperature performance (as measured in sequence iiih engine test vs. api sp test limit)
  • 6x better wear protection
  • 1.4x better sludge protection (as measured in sequence vh engine test vs. api sp test limit)
  • Full Synthetic Oil Composition: Castrol EDGE w/SPT Engine Oil is a full synthetic oil that contains new powerful dispersant molecules, providing superior engine protection and performance.
  • Strongest Oil: Castrol EDGE with Fluid TITANIUM Technology is Castrol’s strongest oil, providing the best combination of sludge protection, wear protection, and maximum engine performance.
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FRAM – 5 Qt Engine Oil High Milage Conventional 5W30 Restores Seals to Reduce Oil Consumption (Part No.F660-5QT)

5 Qt Engine Oil High Milage Conventional 5W30 Restores Seals to Reduce Oil Consumption

from

$25.99
FRAM Conventional High Mileage 5W30 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 5W30 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 5W30 grades 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 engines with over 75,000 miles to help reduce leaks and oil consumption.
See More

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
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FRAM – Full Synthetic 10W30 Engine Oil – Helps Extend Engine Life – 1 Qt (Part No.F940)

Full Synthetic 10W30 Engine Oil - Helps Extend Engine Life - 1 Qt

from

$7.49
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 Full Synthetic Oil 10W30 1 QT is specifically formulated with high-quality synthetic base stocks and advanced additive technology to provide the ultimate protection for your engine, ensuring its longevity and performance.
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Castrol – GTX High Mileage 10W-30 Synthetic Blend Motor Oil: 5 Quart (Part No.1597B0)

GTX High Mileage 10W-30 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)
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FRAM – 5 Qt Conventional 5W30 Engine Oil with Low-Speed Pre-Ignition Control (Part No.F620-5QT)

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

from

$25.99
FRAM Engine Oil SAE 5W-30 utilizes a blend of high-quality conventional and synthetic 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 5W-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.
  • Reliable engine protection: FRAM Conventional Oil 5W30 5 QT utilizes a blend of high-quality conventional and synthetic base stocks coupled with a robust additive system to provide reliable engine protection across a broad range of operating conditions.
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FRAM – Conventional 10W40 Engine Oil with Low-Speed Pre-Ignition Control – 5 Qt (Part No.F640-5QT)

Conventional 10W40 Engine Oil with Low-Speed Pre-Ignition Control - 5 Qt

from

$25.99
FRAM Engine Oil SAE 10W-40 engine oil utilizes high-quality base stocks and a robustï additive system to provide reliable engine protection across a broad range of operatingï 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 engineï designs. FRAM Engine Oil SAE 10W-40 contains additive technology designed to preventï low-speed pre-ignition (LSPI) while also providing increased wear protection, oxidation andï shear stability over previous oil categories. The FRAM Engine Oil SAE 10W-40 meets theï requirements for API SP, SN Plus, SN, SM and earlier API Service Categories.

Product Features:
  • Low-speed pre-ignition control
  • Chain wear protection
  • Piston cleanliness
  • Turbo-compatibility
  • 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.
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Mobil 1 – High Mileage Full Synthetic Motor Oil 10W-30, 1 Quart (Part No.14992)

High Mileage Full Synthetic Motor Oil 10W-30, 1 Quart

from

$12.49
Give your higher mileage engine the care it deserves with Mobil 1 High Mileage full-synthetic motor oil 0W-20. This formula utilizes Mobil 1’s signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness to vehicles with over 75,000 miles. Mobil 1 High Mileage motor oil extends engine life by reducing friction and preventing deposits and sludge buildup, keeping critical engine parts clean and protected for up to 10,000 miles between oil changes. (1) Mobil 1 helps to keep your engine running at lower temperatures (2) and is proven to cool engine temperatures by over 10%. (3) Mobil 1 High Mileage full-synthetic motor oil 10W-30 also helps control oxidation to prevent oil breakdown and is recommended by ExxonMobil for all types of modern cars, SUVs, light vans, and light trucks, including those with high-performance, turbocharged, supercharged, multi-valve, or fuel-injected engines. Mobil 1 is America’s #1 selling synthetic motor oil brand at retail, (4) trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR«. ( (1) Protects for up to 10,000 miles or 1 year, whichever comes first. To learn more about the Mobil 1 Limited Warranty, visit Mobil.US. (2) Compared to conventional oil. (3) Based on proprietary engine testing┐results may vary. (4) Source: The NPD Group/ Retail Tracking Service/ Dollar Sales/ PCMO full-synthetic/ 52 weeks ending Feb 25, 2023)

Product Features:
  • Mobil 1 High Mileage full-synthetic motor oil 10W-30 is designed for engines with over 75,000 miles to go up to 10,000 miles between oil changes.(1)
  • Utilizes Mobil 1’s signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness
  • Meets ILSAC GF-6 standards to help provide low-speed pre-ignition (LSPI) and timing chain wear protection while keeping your engine clean and helping to improve your fuel economy
  • Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -30 degrees F)
  • Mobil 1 is specially formulated to help remove sludge and lower engine temperatures
  • Manufacturer Part Number: 103535
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FRAM – Full Synthetic 5W-30 dexos 1 Gen 3 Motor Oil: 1 Quart (Part No.F930)

Full Synthetic 5W-30 dexos 1 Gen 3 Motor Oil: 1 Quart

from

$7.49
FRAM Engine Oil Full Synthetic SAE 5W-30 is a full synthetic motor oil blended with high quality synthetic base stocks and the latest additive technology to meet the stringent API: SP, SN, SM, SL, SJ, GM dexos®1 Gen 3 and ILSAC GF-6A specifications 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 5W-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. FRAM Engine Oil Full Synthetic SAE 5W-30 and is a fully licensed GM dexos®1 Gen 3 motor oil.

Product Features:
  • Faster oil flow at start-up
  • Fuel efficiency gains over heavier grade oils
  • Excellent sludge and varnish protection
  • 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.
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Castrol – EDGE Full Synthetic High Mileage Motor Oil, 5W-30 (1 Quart) (Part No.6128)

EDGE Full Synthetic High Mileage Motor Oil, 5W-30 (1 Quart)

from

$12.49
Castrol® EDGE® High Mileage is 3X stronger against viscosity breakdown than the leading full synthetic oil. Castrol EDGE High Mileage full synthetic motor oil is designed for older cars with over 75,000 miles that need a high mileage oil to protect worn seals, prevent leaks, remove engine sludge and prevent wear and tear of the engine. As your car ages, its engine can lose performance and efficiency. Proper maintenance is critical to keep your older car performing at its best. Tested in the ASTM D6278 test in the 5W-30 viscosity grade.

Product Features:
  • Boosted with extra fluid titanium technology to protect your older engine
  • Maximizes short and long term engine performance on high mileage engines
  • Reduces leaks, oil burn off and power-robbing deposits
  • Improves fuel economy
  • Castrol EDGE offers motor 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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1991 Pontiac Grand Prix Motor Oil

Maybe you’re in the middle of a full rebuild of that 1991 Pontiac Grand Prix. Maybe you just need a couple of Motor Oil. Either way, Advance Auto Parts has 52 different Motor Oil in our inventory ranging from $5.89 to $41.99. That means you can find the exact parts or products you need to keep that 1991 Pontiac Grand Prix running smoothly.

Motor Oil are only as good as their brand. We stock 5 different brands to make sure you have plenty of trusted parts to choose from for your 1991 Pontiac Grand Prix. Castrol, FRAM, and Valvoline are just some of the brands we stock. Search for brands you know or compare prices and reviews to help you decide!

We know you’ll find the perfect Motor Oil for your 1991 Pontiac Grand Prix, but don’t take our word for it – read our customer ratings and reviews and buy with confidence. Out of the 71,862 reviews in this category, some of the top rated parts include Extended Performance Full Synthetic Motor Oil 5W-30, 1 Quart with 4.9 stars and Advanced Full Synthetic 10W-30 Motor Oil: Maximizes Engine Life, 1 Quart with 4.9 stars.

So if you’re in the market for aftermarket Motor Oil to keep your 1991 Pontiac Grand Prix rolling for years to come, look no further. Shop online and have your products shipped direct to your door, or pick up at the nearest Advance Auto Parts location today!

Motor Oil Brands To Make Your 1991 Pontiac Grand Prix Last

Simple repair, complete replacement, or a full rebuild. No matter the job, your 1991 Pontiac Grand Prix demands trusted brand parts and products to keep it running. Many trusted brands of Motor Oil make up Advance Auto Parts’ inventory, and all are ready to help make your Grand Prix the best it can be. Be sure to browse some of our top Motor Oil brands and parts.

Popular Valvoline Motor Oil

We carry Valvoline parts in our stock across Engine Oil categories, plus more. For a 1991 Pontiac Grand Prix, our most popular Valvoline Motor Oil include:

FAQs for 1991 Pontiac Grand Prix Motor Oil

What are the most purchased Motor Oil for the 1991 Pontiac Grand Prix?

Out of 52 Motor Oil for the 1991 Pontiac Grand Prix, the most popular in our inventory are:
Full Synthetic 5W-30 Dexos1 Gen 3 Engine Oil: 5 Quart
from $27.99
This product is not rated
Full Synthetic 5W-30 Dexos1 Gen 3 Engine Oil: 5 Quart
Engine Oil
5 Qt Conventional 5W30 Engine Oil with Low-Speed Pre-Ignition Control
from $25.99
This product is not rated
5 Qt Conventional 5W30 Engine Oil with Low-Speed Pre-Ignition Control
Engine Oil

What are the top-rated 1991 Pontiac Grand Prix Motor Oil?

Top-rated Motor Oil for your 1991 Pontiac Grand Prix based on customer reviews/ratings are: