2003 Chevrolet Trailblazer Ext Gear Oil

Your 2003 Chevrolet Trailblazer Ext 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 Gear Oil you desperately need.

We currently carry 10 Gear Oil to choose from for your 2003 Chevrolet Trailblazer Ext, and our inventory prices range from as little as $8.79 up to $57.99.

On top of low prices, Advance Auto Parts offers 4 different trusted brands of Gear Oil for the 2003 Chevrolet Trailblazer Ext. We only sell parts from trusted brands like Mobil Oil 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 26,313 reviews on our Gear Oil for the 2003 Chevrolet Trailblazer Ext from previous customers.

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

Gear Oil for Your 2003 Chevrolet Trailblazer Ext

Mobil 1 – Advanced Full Synthetic Engine Oil 5W-30, 5 Quart (Part No.44899)

Advanced Full Synthetic Engine Oil 5W-30, 5 Quart

from

$37.99
Mobil 1 advanced full synthetic motor oil 5W-30 helps to extend engine life for vehicles of all ages. Mobil 1 advanced synthetic motor oil is designed to deliver outstanding engine protection from the five factors that can damage engines over time and protect critical engine parts for up to 10,000 miles between oil changes (1) . Its uniform synthetic oil molecules reduce friction, helping to prevent deposits and sludge buildup. Mobil 1 helps to keep your engine running at lower temperatures. (2) This technologically advanced motor oil is proven to cool engine temperatures by over 10%. (3) Its formulation provides excellent internal engine heat protection (up to 500 degrees Fahrenheit), and low-temperature protection (to -30 degrees Fahrenheit), supporting quick cold-weather starting and ultra-fast protection. Mobil 1 advanced full synthetic motor oil 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. Mobil 1 advanced full synthetic motor oil 5W-30 also helps control oxidation to prevent oil breakdown and is recommended by ExxonMobil for all types of modern vehicles, including high-performance turbo-charged, and supercharged gasoline and diesel multi-valve fuel-injected engines found in passenger cars, SUVs, light vans, and light trucks. Mobil 1 is America’s leading synthetic motor oil brand at retail, 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 advanced full-synthetic engine oil 5w-30 utilizes Mobil 1’s signature triple action formula to deliver outstanding engine performance, protection, and cleanliness.
  • Helps protect critical engine parts for up to 10,000 miles between oil changes,(1) controlling oxidation to prevent oil breakdown and maintaining excellent viscosity
  • 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
  • Mobil 1 is specially formulated to help remove sludge and lower engine temperatures
  • Provides excellent internal engine heat protection (up to 500 degrees f) and low temperature protection (to -30 degrees f)
  • Manufacturer part number: 124317
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Mobil 1 – Advanced Full Synthetic Motor Oil 5W-30, 1 Quart (Part No.24812)

Advanced Full Synthetic Motor Oil 5W-30, 1 Quart

from

$11.99
Mobil 1 advanced full synthetic motor oil 5W-30 helps to extend engine life for vehicles of all ages. Mobil 1 advanced synthetic motor oil is designed to deliver outstanding engine protection from the five factors that can damage engines over time and protect critical engine parts for up to 10,000 miles between oil changes (1) . Its uniform synthetic oil molecules reduce friction, helping to prevent deposits and sludge buildup. Mobil 1 helps to keep your engine running at lower temperatures. (2) This technologically advanced motor oil is proven to cool engine temperatures by over 10%. (3) Its formulation provides excellent internal engine heat protection (up to 500 degrees Fahrenheit), and low-temperature protection (to -30 degrees Fahrenheit), supporting quick cold-weather starting and ultra-fast protection. Mobil 1 advanced full synthetic motor oil 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. Mobil 1 advanced full synthetic motor oil 5W-30 also helps control oxidation to prevent oil breakdown and is recommended by ExxonMobil for all types of modern vehicles, including high-performance turbo-charged, and supercharged gasoline and diesel multi-valve fuel-injected engines found in passenger cars, SUVs, light vans, and light trucks. Mobil 1 is America’s leading synthetic motor oil brand at retail┐, 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 February 25, 2023.)

Product Features:
  • Mobil 1 advanced full synthetic motor oil 5W-30 helps to protect your engine from the five factors that can damage engines over time
  • Helps protect critical engine parts for up to 10,000 miles between oil changes,(1) controlling oxidation to prevent oil breakdown and maintaining excellent viscosity
  • 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
  • Mobil 1 is specially formulated to help remove sludge and lower engine temperatures
  • Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -30 degrees F)
  • Manufacturer Part Number: 124315
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Mobil 1 – Extended Performance Full Synthetic Motor Oil 5W-30, 5 Quart (Part No.14977)

Extended Performance Full Synthetic Motor Oil 5W-30, 5 Quart

from

$41.99
If you trust your vehicle to be there for you, you need to be there for its engine, with Mobil 1 Extended Performance full-synthetic motor oil 5W-30. Our ultimate full-synthetic motor oil meets or exceeds the industry’s toughest standards to help you get the most from your engine for up to 20,000 miles between oil changes, guaranteed.(1) Utilizes Mobil 1’s Triple Action+ Formula to combine outstanding engine performance, protection, and cleanliness with the added benefit of maximized engine power. This cutting-edge formula is recommended by ExxonMobil for all types of modern vehicles, including high-performance, turbo-charged, and supercharged gasoline and diesel multi-valve fuel-injected engines found in passenger cars, SUVs, light vans, and light trucks. Mobil 1 is America’s #1 synthetic motor oil brand at retail,(2) trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR«. ((1)Protects for up to 20,000 miles or 1 year, whichever comes first. To learn more about the Mobil 1 Limited Warranty, visit Mobil.US.(2)Source: The NPD Group/Retail Tracking Service/Dollar Sales/PCMO full-synthetic/52 weeks ending Feb 25, 2023)

Product Features:
  • Mobil 1 Extended Performance full-synthetic motor oil 5W-30 helps protect critical engine parts for up to 20,000 miles between oil changes,(1) controlling oxidation to prevent oil breakdown and maintaining excellent viscosity
  • Utilizes Mobil 1’s Triple Action+ Formula to combine outstanding engine performance, protection, and cleanliness with the added benefit of power
  • 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
  • Helps extend engine life by working to prevent damaging deposits and sludge buildup
  • Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -40 degrees F)
  • Manufacturer Part Number: 120766
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Pennzoil – Platinum High Mileage 5W-30 Full Synthetic Motor Oil, 5 Quart (Part No.550045195)

Platinum High Mileage 5W-30 Full Synthetic Motor Oil, 5 Quart

from

$38.99
Pennzoil Platinum High Mileage SAE 5W-30 is a full synthetic motor oil that is uniquely engineered from our revolutionary PurePlus gas-to-liquid technology which is a patented process that converts pure natural gas into a high quality, full synthetic base oil. Because it is made from natural gas, the base oil is 99.5% pure, contains fewer impurities than base oils made from crude oil, and when combined with our advanced additive technology, creates one of the best formulations in our Pennzoil high mileage portfolio. As your car ages, leaks may develop and cause higher oil consumption and oil burn off, potentially causing your engine to need frequent top-offs. Pennzoil Platinum High Mileage motor oil is enhanced with an excellent combination of special conditioning seal agents and additives to help stop leaks from seals and reduce the oil consumption that is typical of older and worn engines. Our full synthetic high mileage motor oil also protects engines from loss of horsepower, offers excellent performance in extreme temperatures, provides unsurpassed wear protection, and protection against abnormal combustion phenomenon like low-speed pre-ignition observed in modern turbocharged gasoline direct injection (TGDI) engines. Pennzoil Platinum High Mileage SAE 5W-30 is also engineered to help keep engines clean by gently lifting deposits and keeping them away from critical moving engine parts. In fact, it keeps pistons up to 50% cleaner than the toughest industry standards.

Product Features:
  • Full synthetic 5W-30 engine oil made from natural gas, not crude, using Pennzoil’s patented gas-to-liquid PurePlus Technology
  • Designed for for vehicles with over 75,000 miles
  • Pennzoil Platinum High Mileage 5W-30 keeps pistons up to 45% cleaner than the toughest industry standard (Based on Sequence IIIH results)
  • No other leading high mileage motor oil provides better protection from friction (Based on Sequence IVA wear test using SAE 5W-30)
  • Formulated to deliver less oil burn off than high mileage motor oils made from crude oil
  • Helps protect engines from loss of horsepower
  • Provides faster low-temperature oil flow and protects in extreme heat
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Mobil 1 – Extended Performance High Mileage Full Synthetic Engine Oil 5W-30, 1 Quart (Part No.15018)

Extended Performance High Mileage Full Synthetic Engine Oil 5W-30, 1 Quart

from

$13.99
You trust your car to keep you going, even after 75,000 miles. Mobil 1 Extended Performance High Mileage full-synthetic motor oil 5W-30 gives engines with over 75,000 miles the extra care they need to go the distance. Formulated to help prevent leaks, it helps to protect critical engine parts for up to 20,000 miles between oil changes, guaranteed.(1) Utilizes Mobil 1’s Triple Action+ Formula to combine outstanding engine performance, protection, and cleanliness with the added benefit of maximized engine power. This cutting-edge formula is recommended by ExxonMobil for all types of modern vehicles, including high-performance, turbo-charged, and supercharged gasoline and diesel multi-valve fuel-injected engines found in passenger cars, SUVs, light vans, and light trucks. Mobil 1 is America’s #1 synthetic motor oil brand at retail,(2) trusted and recommended by car builders and experienced mechanics, and is the Official Motor Oil of NASCAR. ((1)Protects for up to 20,000 miles or 1 year, whichever comes first. To learn more about the Mobil 1 Limited Warranty, visit Mobil.US. (2)Source: The NPD Group/Retail Tracking Service/Dollar Sales/PCMO full-synthetic/52 weeks ending July 1, 2023)

Product Features:
  • Mobil 1 extended performance high mileage full-synthetic engine oil 5w30 is designed for engines with over 75,000 miles to go up to 20,000 miles between oil changes.(1)
  • Utilizes Mobil 1’s triple action+ formula to combine outstanding engine performance, protection, and cleanliness with the added benefit of power
  • 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 -40 degrees f)
  • Helps extend engine life by working to prevent damaging deposits and sludge buildup
  • Manufacturer part number: 123842
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Pennzoil – Platinum High Mileage 5W-30 Full Synthetic Engine Oil, 1 Quart (Part No.550042728)

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

from

$11.99
Pennzoil Platinum High Mileage SAE 5W-30 is a full synthetic motor oil that is uniquely engineered from our revolutionary PurePlus gas-to-liquid technology which is a patented process that converts pure natural gas into a high quality, full synthetic base oil. Because it is made from natural gas, the base oil is 99.5% pure, contains fewer impurities than base oils made from crude oil, and when combined with our advanced additive technology, creates one of the best formulations in our Pennzoil high mileage portfolio. As your car ages, leaks may develop and cause higher oil consumption and oil burn off, potentially causing your engine to need frequent top-offs. Pennzoil Platinum High Mileage motor oil is enhanced with an excellent combination of special conditioning seal agents and additives to help stop leaks from seals and reduce the oil consumption that is typical of older and worn engines. Our full synthetic high mileage motor oil also protects engines from loss of horsepower, offers excellent performance in extreme temperatures, provides unsurpassed wear protection, and protection against abnormal combustion phenomenon like low-speed pre-ignition observed in modern turbocharged gasoline direct injection (TGDI) engines. Pennzoil Platinum High Mileage SAE 5W-30 is also engineered to help keep engines clean by gently lifting deposits and keeping them away from critical moving engine parts. In fact, it keeps pistons up to 50% cleaner than the toughest industry standards.

Product Features:
  • Full synthetic 5w-30 engine oil made from natural gas, not crude, using pennzoil’s patented gas-to-liquid pureplus technology
  • Designed for for vehicles with over 75,000 miles
  • Pennzoil platinum high mileage 5w-30 keeps pistons up to 45% cleaner than the toughest industry standard (based on sequence iiih results)
  • No other leading high mileage engine oil provides better protection from friction (based on sequence iva wear test using sae 5w-30)
  • Formulated to deliver less oil burn off than high mileage engine oils made from crude oil
  • Helps protect engines from loss of horsepower
  • Provides faster low-temperature oil flow and protects in extreme heat
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Pennzoil – 5W30 Synthetic Blend Motor Oil, 1 Quart (Part No.550022800)

5W30 Synthetic Blend Motor Oil, 1 Quart

from

$8.79
Pennzoil motor oil, America’s most trusted motor oil, is an advanced proprietary conventional formula with active cleansing agents that is engineered to help clean up sludge in your engine. It provides a balance between reducing frictional losses and protection against harmful engine wear by getting between moving parts to prevent them from touching. It exceeds the stringent engine protection standards required by ILSAC GF-5 and API SN and is specially formulated to provide protection against the harmful effects of stop-and-go driving, and low-speed pre-ignition (LSPI) in modern turbocharged engines.

Product Features:
  • Contains an active cleansing technology to help clean out sludge lesser motor oils leave behind
  • No leading conventional oil provides better wear protection by preventing metal-on-metal contact
  • Helps protect against the effects of low speed pre-ignition (LSPI) in modern turbocharged engines
  • Contains a proprietary formulation that is designed to reduce friction between moving engine parts
  • Specifications, Approvals and Recommendations: FCA MS-6395 and Ford WSS-M2C946-B1
  • Exceeds the requirements of the following industry specifications: API SN PLUS, API SN-RC and all previous categories; ILSAC GF-5
  • For a full list of equipment approvals and recommendations, please consult your local Shell Technical Help Desk and always consult your owner’s manual.
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Quaker State – 5W-30 Motor Oil 5 Quart (Part No.550044963)

5W-30 Motor Oil 5 Quart

from

$26.99
Quaker State 5W-30 motor oil is a synthetic blend formulation that helps engines survive daily commutes from high-speed highway operation to repetitive, stop-and-go driving. It maintains the required viscosity from start to finish, providing optimal protection. Quaker State Motor Oil combats engine sludge and deposits, providing rust protection from harmful acids generated by engine contaminants. It reduces engine wear, providing durable wear protection. Quaker State 5W-30 Motor Oil meets or exceeds the following OEM requirements: Chrysler MS-6395; Ford WSS M2C946-A, Ford WSS M2C946-B1; GM 6094M. It exceeds the requirements of the following industry specifications: API SP and all previous categories; ILSAC GF-6a and all previous ILSAC standards. For a full list of equipment approvals and recommendations, please consult your local Quaker State Technical Help Desk and always consult your owner’s manual.

Product Features:
  • Synthetic blend 5W-30 engine oil that provides durable wear protection and reduces engine wear
  • Provides corrosion protection against harmful acids generated by engine contaminants
  • Maintains viscosity from start to finish, providing optimal oil film protection
  • Helps engines survive daily commutes from high-speed highway operation to repetitive, stop-and-go driving
  • Combats engine sludge and deposits
  • Formulated to exceed industry specifications: ILSAC GF-6A, API SP/SP-Resource Conserving and all previous categories
  • Meets OEM requirements: Chrysler MS-6395, Ford WSS M2C946-A, Ford WSS M2C946-B1, GM 6094M
  • Formerly known as Quaker State Advanced Durability 5W-30 motor oil
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Yukon Gear – 3 Qt – 80W90 Conventional Gear Oil With Posi Additive (Part No.15003)

3 Qt - 80W90 Conventional Gear Oil With Posi Additive

from

$57.99
3 Qt. Penzoil 80W90 conventional gear Oil. W/ bottle of Posi additive.

Product Features:
  • Includes three quarts of conventional oil and one 4oz bottle of Yukon positraction additive
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Pennzoil – Pennzoil Ultra Platinum Full Synthetic 5W30 (Part No.550040865)

Pennzoil Ultra Platinum Full Synthetic 5W30

from

$12.99
Pennzoil Ultra PlatinumTM Full Synthetic motor oil is made from natural gas, not crude. It is one of the best full synthetic motor oils in our portfolio. Made for extreme performance, Pennzoil Ultra Platinum outperforms conventional oils in terms of low temperature performance and volatility control. Our full synthetic motor oils are uniquely engineered from our revolutionary PurePlusTM Technology which is a patented process that converts pure natural gas into a high quality, full synthetic base oil. Because it is made from natural gas, the high- quality base oil contains fewer impurities than base oils made from crude oil, and when combined with our advanced additive technology creates one of the best formulations in our Pennzoil portfolio. Pennzoil Ultra Platinum far exceeds the most stringent car manufacturer requirements for cleanliness and protection (based on ILSAC GF-6, dexos1 and Ferrari approvals), and is suitable for all car, SUV, light van, truck gasoline and turbocharged engines; under all driving conditions.

Product Features:
  • Full synthetic 5W-30 engine oil made from natural gas, not crude, using Pennzoil’s patented gas-to-liquid PurePlus Technology
  • No other leading motor oil provides better wear protection for your engine (Based on Sequence IVA wear test using SAE 5W-30)
  • Helps protect engines from loss of power and provides better fuel economy-drive on average an extra 550 miles per year (versus a dirty engine)
  • Keeps pistons dramatically cleaner than required by the toughest industry standards (Based on ILSAC GF-6 and Sequence IIIH piston deposit test using SAE 5W-30)
  • Delivers unsurpassed sludge protection to help keep high-performance and luxury car engines as close as possible to factory clean (Based on Sequence VH Sludge Test using SAE 5W-20)
  • Formulated to provide faster low-temperature oil flow and protection in extreme heat
  • Pennzoil is the first motor oil made from natural gas, not crude- PurePlus Technology converts pure natural gas into high-quality, full-synthetic base oil that’s crystal clear and contains fewer impurities than other traditional and synthetic motor oils
  • Suitable for all car, SUV, light van, truck gasoline and turbocharged engines; under all driving conditions.
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FAQs for 2003 Chevrolet Trailblazer Ext Gear Oil

What are the most popular Gear Oil for the 2003 Chevrolet Trailblazer Ext?

With 4 brands you can trust, our most popular Gear Oil for the 2003 Chevrolet Trailblazer Ext parts are:

What are the best aftermarket Gear Oil for the 2003 Chevrolet Trailblazer Ext?

See what past customers had to say about our highest-rated Gear Oil for the 2003 Chevrolet Trailblazer Ext:
5W-30 Motor Oil 5 Quart
from $26.99
(478)
5W-30 Motor Oil 5 Quart
“Truck runs poorly off of every oil but this brand!”
Extended Performance High Mileage Full Synthetic Engine Oil 5W-30, 1 Quart
from $13.99
(106)
Extended Performance High Mileage Full Synthetic Engine Oil 5W-30, 1 Quart
“We just did the oil change in our everyday driver car. We always use full synthetic and I love that this is for high mileage so we get the most out of”