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Best motor oils - August 2025

Last Updated - August 11, 2025

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.

Shell Rotella

Shell Rotella T6 Full Synthetic 15W-40 Motor Oil, 1 Gallon (3 Pack)

Shell Rotella

$67.48

More Details
Main highlights
- Protection in extreme operating conditions and climates
- Meets or exceeds the following industry requirements: API CK-4, CJ-4, CI-4 Plus, CI-4, SN; ACEA E11; JASO DH-2, MA/MA2
- Meets or exceeds the following OEM specifications: Caterpillar ECF-2/ECF-3; Cummins CES 20086, 20081; Detroit Fluids Specification (DFS) 93K222, 93K218; DTFR 15C100 (prev. MB 228.31); MACK EOS-4.5; MAN M 3775; Ford WSS-M2C171-F1; Allison TES 439; Volvo VDS-4.5
- Limited warranty valid up to 15 years or 500,000 miles (whichever comes first) if you exclusively use Shell Rotella T6 Full Synthetic Technology heavy-duty engine oil*
- Improved wear performance versus API CJ-4 technology
- Full synthetic 15W-40 diesel engine oil with Triple Protection Plus technology protects against wear, deposits, and oil breakdown
- Formulated to deliver increased protection against oxidation and enhanced deposit control/cleanliness
- For a full list of equipment approvals and recommendations, please consult your local Shell Technical Help Desk and always consult your owner’s manual
- Compatibility with exhaust emissions control systems
- Better cold cranking properties and low-temperature pumpability (compared to conventional and synthetic blend 15W-40 motor oil)
$67.48
2
10% 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.

Shell Rotella
10% Off

Shell Rotella T4 Triple Protection 15W-40 Motor Oil, 1 Gallon (3 Pack)

Shell Rotella

$42.98

$47.88
(10% Off)

More Details
Main highlights
- Suitable for use in agricultural, mining, logging, and construction applications, plus diesel pick-up trucks
- Provides significantly better wear protection than previous generation oils to maximize engine efficiency and prolong engine life
- Outstanding protection for heavy-duty diesel engines, including the latest emission-controlled engines using EGR and containing a diesel particulate filter
- Meets or exceeds the following industry requirements: API CK-4, CJ-4, CI-4 Plus, CI-4, CH-4, SN; ACEA E11; JASO DH-2, MA, MA2
- Meets or exceeds the following OEM specifications: Caterpillar ECF-2, ECF-3; Cummins CES 20086, 81; Detroit Fluids Specification (DFS) 93K222, 93K218; Deutz DOC III-10 LA; MACK EOS-4.5, EO-O Premium Plus; MAN M 3575; DTFR 15C100 (prey. MB 228.31); MTU Category 2.1; Allison TES-439; Volvo VDS-4.5, VDS-4; Ford WSS-M2C171-F1
- Formulated with advanced additive technology plus synthetic base oil for enhanced deposit control and superior engine cleanliness throughout the oil drain interval
- For a full list of equipment approvals and recommendations, please consult your local Shell Technical Help Desk and always consult your owner’s manual
- Enhanced shear stability for better viscosity control and optimal engine oil pressure
- 15W-40 diesel engine oil with Triple Protection technology protects against wear, deposits, and oil breakdown
$42.98
$47.88 (10% Off)
3
16% 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
16% Off

Mobil 1 Advanced Fuel Economy Full Synthetic Motor Oil 0W-20, 5 Quart

Mobil

$24.97

$29.97
(16% Off)

More Details
Main highlights
- Utilizes Mobil 1’s signature Triple Action Formula to deliver outstanding engine performance, protection, and cleanliness
- Mobil 1 Advanced Fuel Economy full-synthetic motor oil 0W-20 is low-viscosity to help improve fuel economy.*
- Meets ILSAC GF-6 standards to help provide low-speed pre-ignition (LSPI) and timing chain wear protection while keeping your engine clean
- Helps protect critical engine parts for up to 10,000 miles between oil changesm,** controlling oxidation to prevent oil breakdown and maintaining excellent viscosity
- Helps extend engine life by working to prevent damaging deposits and sludge buildup
$24.97
$29.97 (16% Off)
4
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
- Meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN Plus, API SN, GM dexos 1 Gen 3
- Full synthetic 0W-20 formula offers 24X stronger protection against water intrusion than the industry-leading synthetic motor oil — it fights rust, corrosion, and other threats to help maximize vehicle life
- American made and formulated, from the Original Motor Oil brand trusted for more than 150 years
- Advanced protection against the four main causes of engine breakdown: wear friction heat and deposits
- 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
$26.97
$35.99 (25% Off)
5
Best Value
37% 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
37% Off

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

Valvoline

$19.97

$31.99
(37% Off)

More Details
Main highlights
- Meets or exceeds all requirements of ILSAC GF-6A, API SP, API SN with SN Plus, API SN
- 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.
- American made and formulated, from the Original Motor Oil brand trusted for more than 150 years
- Advanced friction-fighting additives help maximize performance and improve fuel efficiency.
- Added detergents reduce sludge, corrosion, rust and deposits to help keep motors clean inside and ensure a smooth-running engine.
$19.97
$31.99 (37% Off)