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10 Best Mobil 1 Full Synthetic Engine Oil 5w 20 5 Quart of 2025

Tested and Reviewed: Top 10 Mobil 1 Full Synthetic Engine Oil 5w 20 5 Quart deals with expert ratings from 8.1 to a perfect 10

October 2025 Edition

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1

Editor's Choice

9.7

Save 25%

Valvoline Full Synthetic High Mileage with MaxLife Technology 5W-20 Motor Oil 5 QT

Valvoline

Valvoline Full Synthetic High Mileage with MaxLife Technology 5W-20 Motor Oil 5 QT

25% OffFree Shipping

Editor's bottom line:

“This mobil 1 full synthetic engine oil 5w 20 5 quart is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Full synthetic formula is engineered with Enhanced MaxLife Technology to prevent engine breakdown in vehicles with over 75,000 miles
Formulated with seal conditioners to prevent and treat oil leaks, Valvoline Full Synthetic High Mileage minimizes oil consumption and maximizes engine life
50% better wear protection than the industry standard and 25% extra defense against deposits, sludge, corrosion and rust
Meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN Plus, API SN
American made and formulated, from the Original Motor Oil brand trusted for more than 150 years

Picked by 281 people today

2

9.5

Mobil 1 5W-20 Advanced Synthetic Motor Oil - 1 Quart

Mobil

Mobil 1 5W-20 Advanced Synthetic Motor Oil - 1 Quart

Main Highlights

For best performance, follow the manufacturer's recommendations in your vehicle owners manual.

3

9.5

Save 7%

Mobil 1 Advanced Full Synthetic Motor Oil 5W-20, 5 Quart

Mobil

Mobil 1 Advanced Full Synthetic Motor Oil 5W-20, 5 Quart

7% OffFree Shipping

Main Highlights

Mobil 1 advanced full-synthetic motor oil 5W-20 utilizes Mobil 1s 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,* 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
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 -30 degrees F)

4

9.2

Save 8%

Mobil 1-123837 Extended Performance High Mileage 0W-20; 5QT, Gray

Mobil

Mobil 1-123837 Extended Performance High Mileage 0W-20; 5QT, Gray

8% OffFree Shipping

Main Highlights

Mobil 1 Extended Performance High Mileage full-synthetic motor oil 0W-20 is designed for engines with over 75,000 miles to go up to 20,000 miles between oil changes.*
Utilizes Mobil 1s 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

5

9.0

Save 39%

Mobil 1 Advanced Fuel Economy Full Synthetic Motor Oil 0W-20, 6-pack of 1 quarts

Mobil

Mobil 1 Advanced Fuel Economy Full Synthetic Motor Oil 0W-20, 6-pack of 1 quarts

39% OffFree Shipping

Main Highlights

Mobil 1 Advanced Fuel Economy full-synthetic motor oil 0W-20 is low-viscosity to help improve fuel economy.*
Utilizes Mobil 1s 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,** 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
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)

6

8.8

Mobil Full Synthetic Motor Oil 5W-20, 1 Quart (6-pack)

Mobil

Mobil Full Synthetic Motor Oil 5W-20, 1 Quart (6-pack)

Main Highlights

Mobil Full Synthetic 5W-20 motor oil is formulated for vehicles upgrading from conventional oil or synthetic blend, or requiring full synthetic motor oil
Provides guaranteed protection that's 1.5X longer than our conventional and synthetic blend oils, up to 7,500 miles between oil changes*
Helps to prevent sludge and deposit formation, to help reduce engine wear, and has balanced additive system formulation
Provides excellent resistance to oil breakdown, for proven long-lasting protection, and maintains oil viscosity at high operating temperatures
Recommended for all types of gasoline-powered vehicles, including those with turbocharged engines, and meets API SP resource-conserving

7

8.6

Mobil Full Synthetic High Mileage Motor Oil 5W-20, 1 Quart (6-pack)

Mobil

Mobil Full Synthetic High Mileage Motor Oil 5W-20, 1 Quart (6-pack)

Main Highlights

Mobil Full Synthetic High Mileage 5W-20 motor oil is designed for vehicles with over 75,000 miles, upgrading from a conventional or synthetic blend, or requiring full synthetic motor oil
Provides guaranteed protection that's 1.5X longer than our conventional and synthetic blend oils, up to 7,500 miles between oil changes*
Helps to prevent oil leaks, sludge, and deposit formation to help reduce engine wear with a balanced additive system formulation and extra seal conditioner
Provides excellent resistance to oil breakdown, for proven long-lasting protection, and maintains oil viscosity at high operating temperatures
Recommended for all types of gasoline-powered vehicles, including those with turbocharged engines, and meets API SP resource-conserving

8

8.3

Mobil 1 Extended Performance Full Synthetic Motor Oil 5W-20, 1 Quart (6-pack)

Mobil

Mobil 1 Extended Performance Full Synthetic Motor Oil 5W-20, 1 Quart (6-pack)

Main Highlights

5W20
1 Quart Bottles
Set of 6

9

8.1

Mobil 1 Extended Performance High Mileage Full Synthetic Motor Oil 5W-20, 1 Quart (6-pack)

Mobil

Mobil 1 Extended Performance High Mileage Full Synthetic Motor Oil 5W-20, 1 Quart (6-pack)

Main Highlights

Mobil 1 Extended Performance High Mileage full-synthetic motor oil 5W-20 is designed for engines with over 75,000 miles to go up to 20,000 miles between oil changes.*
Utilizes Mobil 1s 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

10

8.1

Save 8%

Mobil 1-123837 Extended Performance High Mileage 0W-20; 5QT, Gray (Pack of 2)

Mobil

Mobil 1-123837 Extended Performance High Mileage 0W-20; 5QT, Gray (Pack of 2)

Main Highlights

The information below is per-pack only
Mobil 1 Extended Performance High Mileage full-synthetic motor oil 0W-20 is designed for engines with over 75,000 miles to go up to 20,000 miles between oil changes.*
Utilizes Mobil 1s 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

Our Best Overall Choice

9.7

Valvoline Full Synthetic High Mileage with MaxLife Technology 5W-20 Motor Oil 5 QT

Valvoline

Valvoline Full Synthetic High Mileage with MaxLife Technology 5W-20 Motor Oil 5 QT

25% OffFree Shipping

Editor's bottom line:

“This is the best one we tested. In terms of quality, brand and price, we couldn't ask for more.”

Main Highlights

Full synthetic formula is engineered with Enhanced MaxLife Technology to prevent engine breakdown in vehicles with over 75,000 miles
Formulated with seal conditioners to prevent and treat oil leaks, Valvoline Full Synthetic High Mileage minimizes oil consumption and maximizes engine life
50% better wear protection than the industry standard and 25% extra defense against deposits, sludge, corrosion and rust
Meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN Plus, API SN
American made and formulated, from the Original Motor Oil brand trusted for more than 150 years

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Mobil 1 Advanced Fuel Economy Full Synthetic Motor Oil 0W-20, 6-pack of 1 quarts

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Mobil 1 Extended Performance Full Synthetic Motor Oil 0W-20, 1 Quart (6-pack)

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Mobil 1 Extended Performance Full Synthetic Motor Oil 5W-20, 1 Quart (6-pack)

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Mobil Full Synthetic Motor Oil 0W-20, 5 Quart, Case of 3

Mobil Full Synthetic Motor Oil 0W-20, 5 Quart, Case of 3

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Valvoline Full Synthetic High Mileage with MaxLife Technology 5W-20 Motor Oil 5 QT

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