Synthetic motor oil is essential for optimal engine performance and longevity, and the market is filled with top-tier options. In 2025, the best synthetic motor oils stand out for their superior lubrication, enhanced fuel efficiency, and excellent protection against wear and tear. Brands like Mobil 1, Castrol, and Valvoline have developed formulations that cater to various driving conditions and engine types, ensuring that every vehicle can benefit from high-quality synthetic oil. Choosing the right synthetic motor oil can significantly impact your engine's health and performance, making it crucial to select from the best available options.
SALE
−$5.00
Mobil 1 Advanced Full Synthetic Motor Oil 5W-20, 5 Quart
- Mobil 1 advanced full-synthetic motor oil 5W-20 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,* 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)
$24.97
SALE
−$9.02
Valvoline Advanced Full Synthetic SAE 5W-30 Motor Oil 5 QT
- Advanced protection against the four main causes of engine breakdown: wear friction heat and deposits
- Full synthetic formula offers 24X stronger protection against engine-killing contaminants than the leading full synthetic motor oil
- 40% better wear protection vs. industry standards as tested in the Sequence IVB engine test
- 25% better deposit protection with superior engine cleaning detergents as tested in the GMOD engine test
- Meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN Plus, API SN, GM dexos 1 Gen 3
$26.97
Castrol GTX Full Synthetic 5W-30 Motor Oil, 5 Quarts
- 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
- Meets or exceeds the following specifications: API SP/SN PLUS/SN | ILSAC GF-6 | GM dexos1 Gen 3 | Meets Ford WSS-M2C946-B1 | Meets Ford WSS-M2C961-A1 |
$34.40
Quaker State Full Synthetic 5W-30 Motor Oil, 5-Quart
- Full synthetic 5W-30 motor oil provides strong engine performance and protection against deposits between oil changes
- Ideal for use in modern turbocharged engines and high-performance vehicles like sports cars, SUVs, trucks, and minivans
- Designed to deliver more power and less friction, reducing friction to maximize horsepower (compared to Quaker State motor oil)
- Provides improved fuel economy (based on the latest industry standard)
- Excellent protection against formation of sludge and other harmful deposits (based on Sequence IIIH & VH tests on 0W-20 engine oil)
$22.97
SALE
−$3.38
Shell Rotella T6 Full Synthetic 5W-40 Motor Oil, 1 Gallon (3 Pack)
- Full synthetic 5W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown
- Improved wear performance with significantly increased level of protection against harmful engine wear (compared to previous generation API CJ-4 engine oils)
- Enhanced fuel economy capability of 1.5% without compromising engine protection or durability (compared to 15W-40 oils)
- Multi-functional dispersant additives provide an enhanced level of protection against the effects of soot, dirt, and other contaminants
- Resists breakdown by heat to provide continuous protection throughout the service interval, and also provides improved low-temperature flow compared to conventional 15W-40 oils
$66.98
SALE
−$10.02
Valvoline Extended Protection Full Synthetic Motor Oil SAE 5W-30 5 Quart
- Ultimate protection against wear, friction, heat and deposits, the main reasons for engine breakdown
- 24X stronger protection against water contamination than the industry-leading synthetic motor oil — it fights rust, corrosion, and other threats to help maximize vehicle life
- Dual Defense Additive Technology helps keep your engine clean and running at peak performance for optimal fuel economy and performance
- 10X stronger against oil breakdown and 50% greater wear protection than industry standards
- Meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN Plus, API SN, dexos 1 Gen 3
$28.97
SALE
−$2.31
Castrol GTX Full Synthetic 0W-20 Motor Oil, 5 Quarts
- 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
- Meets or exceeds the following specifications: API SP/SN PLUS/SN | ILSAC GF-6 | GM dexos1 Gen 3 | Meets Ford WSS-M2C947-B1 | Meets Ford WSS-M2C962-A1 |
$23.96
SALE
−$5.02
Castrol EDGE 0W-20 Advanced Full Synthetic Motor Oil, 5 Quarts
- 3X Stronger than the leading full synthetic*
- 10X Better high stress performance**
- 20,000 miles between oil changes***
- Approved and Licensed Specifications: Exceeds API SP/SN PLUS/SN/SM |ILSAC GF-6 | GM dexos1 Gen 3 | Meets engine test requirements of Chrysler MS 6395 | Meets Ford WSS-M2C947-B1 | Meets Ford WSS-M2C962-A1 |
- Viscosity breakdown as measured in Kurt Orbahn test on 5W-30 grade |**As measured in Seq IX test under high load/torque conditions vs. API SP test limits | ***Or one year, whichever comes first
$23.97
SALE
−$1.28
Castrol GTX Full Synthetic 5W-20 Motor Oil, 5 Quarts
- 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
- Meets or exceeds the following specifications: API SP/SN PLUS/SN | ILSAC GF-6 | Meets Ford WSS-M2C945-B1 | Meets Ford WSS-M2C960-A1 |
$23.96
SALE
−$5.02
Castrol EDGE 5W-30 Advanced Full Synthetic Motor Oil, 5 Quarts
- 3X Stronger than the leading full synthetic*
- 10X Better high stress performance**
- 20,000 miles between oil changes***
- Approved and Licensed Specifications: Exceeds API SP/SN PLUS/SN/SM | ILSAC GF-6 | GM dexos1 Gen 3 | Meets engine test requirements of Chrysler MS 6395 | Meets Ford WSS-M2C946-B1 | Meets Ford WSS-M2C961-A1|
- Viscosity breakdown as measured in Kurt Orbahn test on 5W-30 grade |**As measured in Seq IX test under high load/torque conditions vs. API SP test limits | ***Or one year, whichever comes first
$23.97
Last update on 2025-05-02 / Affiliate links / Images from Amazon Product Advertising API