Best High Mileage Full Synthetic Oil

Peter | 01-01-2025

Looking for some of the best Best High Mileage Full Synthetic Oil? As you may know, there are dozens of brands available in the market such as Valvoline,Mobil,Castrol and some come with vastly different price tags. Let us help you out here – we have handpicked the Best High Mileage Full 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 Full 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 Full Synthetic High Mileage 5W-30 Motor Oil 5 Quart
Valvoline Full Synthetic High Mileage 5W-30 Motor Oil 5 Quart
Premium Pick
Mobil 1 High Mileage Full Synthetic Motor Oil 5W-30, 5 Quart
Mobil 1 High Mileage Full Synthetic Motor Oil 5W-30, 5 Quart
Budget Pick
Castrol EDGE High Mileage 5W-20 Advanced Full Synthetic Motor Oil, 5 Quarts
Castrol EDGE High Mileage 5W-20 Advanced Full Synthetic Motor Oil, 5 Quarts

Top 10 Best High Mileage Full Synthetic Oil

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

1. Valvoline Full Synthetic High Mileage 5W-30 Motor Oil 5 Quart

Valvoline Full Synthetic High Mileage 5W-30 Motor Oil 5 Quart
9.8

Valvoline

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

2. 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

3. Castrol EDGE High Mileage 5W-20 Advanced Full Synthetic Motor Oil, 5 Quarts

Castrol EDGE High Mileage 5W-20 Advanced Full Synthetic Motor Oil, 5 Quarts
9.1

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*
  • *Or one year, whichever comes first
  • 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-M2C945-B1
  • Meets Ford WSS-M2C960-A1

4. Valvoline Advanced Full Synthetic 0W-20 Motor Oil 5 Quart

Valvoline Advanced Full Synthetic 0W-20 Motor Oil 5 Quart
9.1

Valvoline

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  • 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, GM dexos 1 Gen 3
  • AMERICAN MADE & FORMULATED to maximize your engines life and improve its performance

5. Mobil Full Synthetic High Mileage Motor Oil 5W-30, 1 Quart (6-pack)

  • Mobil Full Synthetic High Mileage 5W-30 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

6. Mobil Full Synthetic High Mileage Motor Oil 0W-20, 1 Quart (6-pack)

  • Mobil Full Synthetic High Mileage 0W-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

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

  • 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

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

  • 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

9. Castrol GTX Full Synthetic 5W-30 Motor Oil, 5 Quarts

Castrol GTX Full Synthetic 5W-30 Motor Oil, 5 Quarts
7.9

Castrol

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  • 6X better wear protection on critical engine parts than industry standards**
  • 1.3X better sludge protection than industry standards*
  • 3X Stronger against viscosity breakdown than leading full synthetic^
  • Protection for 10,000 miles between oil changes
  • *As measured in Sequence VH sludge test vs. API SP limits
  • **As measured in the latest Sequence IVA test
  • ^ Based on Kurt Orbahn test in 5W-30 grade
  • Meets or exceeds the following specifications: API SP/SN PLUS/SN and ILSAC GF-6
  • GM dexos1 Gen 3
  • Meets Ford WSS-M2C946-B1 and Meets Ford WSS-M2C961-A1

10. Castrol GTX High Mileage 5W-20 Synthetic Blend Motor Oil, 5 Quarts

Castrol GTX High Mileage 5W-20 Synthetic Blend Motor Oil, 5 Quarts
7.7

Castrol

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  • 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

Peter

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