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Best engine oils - May 2026

Last Updated - May 20, 2026

1
Best Choice

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Castrol

Castrol EDGE 0W-20 Advanced Full Synthetic Motor Oil, 5 Quarts

Castrol

$27.48

$28.99
(5% Off)

More Details
Main highlights
- Meets engine test requirements of Chrysler MS 6395 | Meets Ford WSS-M2C947-B1 | Meets Ford WSS-M2C962-A1
- Approved and Licensed Specifications: Exceeds API SQ/SP/SN PLUS/SN | ILSAC GF-7 | GM dexos1 Gen 3
- 3X Stronger than the leading full synthetic*
- 20,000 miles between oil changes***
- 10X Better high stress performance**
- *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 SQ test limits
- ***Or one year, whichever comes first
$27.48
$28.99 (5% Off)
2
Best Value
25% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Valvoline
25% Off

Valvoline Advanced Full Synthetic SAE 0W-20 Motor Oil 5 QT

Valvoline

$26.97

$35.99
(25% Off)

More Details
Main highlights
- Up to 2.5X better heat protection vs. industry standards to fight harmful sludge formation and thermal breakdown
- Provides 15% better deposit defense vs. industry standards, keeping engines cleaner for smoother performance and longer-lasting protection
- Meets the requirements of: ILSAC GF-7A, API SQ, API SP, API SN with SN PLUS, Resource Conserving and all preceding API and ILSAC gasoline categories. Additional Specifications: Ford WSS-M2C962-A1, Chrysler MS-13340, GM dexos 1 Gen 3
- Engineered for excellent low-temperature flow, reducing metal-to-metal contact during cold starts — when most engine wear typically occurs
- Delivers 40% stronger wear protection than industry standards to reduce friction and improve fuel economy
- Advanced protection against the four main causes of engine breakdown: wear friction heat and deposits
$26.97
$35.99 (25% Off)
3
25% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Valvoline
25% Off

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

Valvoline

$26.97

$35.99
(25% Off)

More Details
Main highlights
- Provides 20% stronger sludge defense than industry standards to protect against harmful buildup and deposits
- Offers 2.5X better heat protection than industry standards to safeguard engines in extreme conditions
- Meets or exceeds all requirements of: ILSAC GF-7A, API SQ, API SP, API SN with SN PLUS, Resource Conserving and all preceding API and ILSAC gasoline categories. Additional Specifications: Ford WSS-M2C960-A1, Chrysler MS-13340
- Formulated with seal conditioners to help prevent oil leaks, reduce oil consumption, and improve fuel economy
- Designed for vehicles with 75,000 miles or more, Valvoline MaxLife Full Synthetic High Mileage Motor Oil helps maximize engine life and performance for the many miles still ahead
- Delivers 50% stronger wear protection than industry standards for superior defense against friction and wear
$26.97
$35.99 (25% Off)
4
17% Off

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Mobil
17% Off

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

Mobil

$24.97

$29.97
(17% Off)

More Details
Main highlights
- Utilizes Mobil 1’s signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness
- Provides excellent internal engine heat protection (up to 500 degrees F) and low temperature protection (to -30 degrees F)
- 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.*
- 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
$24.97
$29.97 (17% Off)
5

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Castrol

Castrol GTX Full Synthetic 0W-20 Motor Oil, 5 Quarts

Castrol

$23.96

$26.27
(9% Off)

More Details
Main highlights
- 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 |
- 6X better wear protection on critical engine parts than industry standards**
- 3X Stronger against viscosity breakdown than leading full synthetic^
- 1.3X better sludge protection than industry standards*
$23.96
$26.27 (9% Off)