Best High Mileage Synthetic Oil

Peter | 04-01-2026

Looking for some of the best Best High Mileage Synthetic Oil? As you may know, there are dozens of brands available in the market such as Valvoline,Mobil and some come with vastly different price tags. Let us help you out here – we have handpicked the Best High Mileage Synthetic Oil for you.

To compile our list, we’ve researched and evaluated a range of the best-selling products on the market. We recommend Valvoline Best High Mileage Synthetic Oil as our top pick because of its exceptional overall performance. Want to explore more options? Read on! There’s also a buying guide to help you make a wise shopping decision.

Editor's Choice
Valvoline High Mileage with MaxLife Technology SAE 5W-20 Synthetic Blend Motor Oil 5 QT
Valvoline High Mileage with MaxLife Technology SAE 5W-20 Synthetic Blend Motor Oil 5 QT
Premium Pick
Mobil 1 High Mileage Full Synthetic Motor Oil 5W-20, 5 Quart
Mobil 1 High Mileage Full Synthetic Motor Oil 5W-20, 5 Quart
Budget Pick
Valvoline Full Synthetic High Mileage with MaxLife Technology 5W-20 Motor Oil 5 Quart
Valvoline Full Synthetic High Mileage with MaxLife Technology 5W-20 Motor Oil 5 Quart

Top 10 Best High Mileage Synthetic Oil

We researched and compared the top products in the Best High Mileage Synthetic Oil category to provide you with these recommendations.

1. Valvoline High Mileage with MaxLife Technology SAE 5W-30 Synthetic Blend Motor Oil 5 QT

Valvoline High Mileage with MaxLife Technology SAE 5W-30 Synthetic Blend Motor Oil 5 QT
8

Valvoline

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  • MaxLife Technology prevents engine breakdown with 40% better wear protection than the industry standard
  • Includes seal conditioners to reduce oil consumption and oil leaks in high mileage engines.
  • Added detergents reduce sludge, corrosion, rust and deposits to help keep motors clean inside and ensure a smooth-running engine.
  • Advanced friction-fighting additives help maximize performance and improve fuel efficiency.
  • 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

2. Mobil 1 Extended Performance High Mileage Full Synthetic Motor Oil 5W-30, 5 Quart

  • Mobil 1 Extended Performance High Mileage full-synthetic motor oil 5W-30 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

3. Valvoline Full Synthetic High Mileage with MaxLife Technology 5W-20 Motor Oil 5 Quart

Valvoline Full Synthetic High Mileage with MaxLife Technology 5W-20 Motor Oil 5 Quart
8.9

Valvoline

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  • 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

4. Mobil 1 High Mileage Full Synthetic Motor Oil 5W-30, 5 Quart

  • 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.*
  • 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)
  • Helps extend engine life by working to prevent damaging deposits and sludge buildup

5. Valvoline High Mileage with MaxLife Technology SAE 5W-20 Synthetic Blend Motor Oil 5 QT

Valvoline High Mileage with MaxLife Technology SAE 5W-20 Synthetic Blend Motor Oil 5 QT
9.8

Valvoline

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  • MaxLife Technology prevents engine breakdown with 40% better wear protection than the industry standard
  • Includes seal conditioners to reduce oil consumption and oil leaks in high mileage engines.
  • Added detergents reduce sludge, corrosion, rust and deposits to help keep motors clean inside and ensure a smooth-running engine.
  • Advanced friction-fighting additives help maximize performance and improve fuel efficiency.
  • 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

6. Mobil 1 High Mileage Full Synthetic Motor Oil 5W-20, 5 Quart

  • Mobil 1 High Mileage full-synthetic motor oil 5W-20 is designed for engines with over 75,000 miles to go up to 10,000 miles between oil changes.*
  • 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

7. Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 5 Quarts

Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 5 Quarts
8.7

Castrol

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  • Phosphorus Replacement Technology helps extend emission system life
  • Superior dispersancy that fights sludge build up
  • Exceptional oil burn-off protection exceeding industry standards* | Seal conditioners to help reduce leaks
  • Advanced additives that help prevent engine wear | Improved Fuel Economy**
  • Meets or exceeds the following specifications: API SP/SN PLUS/SN/SM | ILSAC GF-6 | Meets Ford WSS-M2C946-B1 | Meets Ford WSS-M2C961-A1 | * Based on API and ACEA volatility specifications | ** In 5W-20, 5W-30 and 10W-30 grades versus industry specifications

8. Mobil 1 High Mileage Full Synthetic Motor Oil 0W-20, 5 Quart

  • Mobil 1 High Mileage full-synthetic motor oil 0W-20 is designed for engines with over 75,000 miles to go up to 10,000 miles between oil changes.*
  • 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

9. Castrol EDGE High Mileage 5W-30 Advanced Full Synthetic Motor Oil, 5 Quarts

Castrol EDGE High Mileage 5W-30 Advanced Full Synthetic Motor Oil, 5 Quarts
7.9

Castrol

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  • Phosphorus Replacement Technology to help extend the life of the emission system
  • Reduces leaks, oil burnoff and power robbing deposits
  • 15,000 miles between oil changes*
  • Meets or exceeds the following specifications: API SP/SN PLUS/SN/SM | ILSAC GF-6 | Meets engine test requirements of Chrysler MS 6395 | Meets Ford WSS-M2C946-B1 | Meets Ford WSS-M2C961-A3
  • *Or one year, whichever comes first

10. Valvoline High Mileage with MaxLife Technology SAE 5W-30 Synthetic Blend Motor Oil 5 QT

Valvoline High Mileage with MaxLife Technology SAE 5W-30 Synthetic Blend Motor Oil 5 QT
7.7

Valvoline

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  • 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
  • AMERICAN MADE & FORMULATED to maximize your engines life and improve its performance

Peter

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