Updated: 16 Feb 2025

engine oils

Explore up to 46% Off

Updated: 16 Feb 2025

#1

Best Choice
Shell Rotella T6 Full Synthetic 5W-40 Motor Oil, 1 Gallon (3 Pack)

9.6

Shell Rotella

-46%

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Why we love it

Enhanced engine protection and longevity.

Improves fuel economy by 1.5%.

Widely trusted by long-term users.

Main highlights

Triple Protection Plus Technology
Full synthetic 5W-40 oil protects against wear, deposits, and oil breakdown.

Versatile Heavy-Duty Applications
Ideal for pickup trucks, tractors, semi rigs, and more.

Consistent Performance Praise
Users appreciate smooth, quiet engine operation and reliability.

-46%
#2

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

9.5

Castrol

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Why we love it

Superior wear protection for engine parts.

Excellent sludge cleaning and prevention.

Highly trusted by long-term users.

Main highlights

Superior Wear and Sludge Protection
Offers 6X better wear protection and 1.3X better sludge protection than industry standards.

Ideal for Long-Term Engine Health
Perfect for those seeking reliable engine longevity and cleanliness.

Highly Trusted by Customers
Praised for quality and reliability by users for over 25 years.
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How do we rank
Our AI-powered platform ranks products using multiple weighted factors from millions of products and user reviews across the web, providing the most valuable and real data. Higher scores rank first.
#3
Valvoline Full Synthetic High Mileage with MaxLife Technology 5W-20 Motor Oil 5 QT

9.4

Valvoline

-25%

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Main highlights

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

-25%
#4
Mobil 1 Advanced Full Synthetic Motor Oil 5W-20, 5 Quart

9.3

Mobil

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Why we love it

Extends engine life effectively.

Suitable for various driving conditions.

Highly trusted by users.

Main highlights

Outstanding Engine Performance
Mobil 1 advanced full-synthetic motor oil 5W-20 offers superior engine performance and protection with its Triple Action Formula.

Long-Lasting Protection
Ideal for vehicles needing up to 10,000 miles between oil changes, maintaining viscosity and preventing breakdown.

Praised Performance
Customers frequently commend its ability to enhance engine smoothness and reliability over long distances.
#5
Castrol GTX High Mileage 5W-30 Synthetic Blend Motor Oil, 5 Quarts

9.1

Castrol

-10%

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Why we love it

Extends engine life efficiently.

Reduces sludge and wear effectively.

High customer satisfaction.

Main highlights

Phosphorus Replacement Technology Benefit
Helps extend the life of the emission system, reducing maintenance costs.

Ideal for High Mileage Vehicles
Perfect for older cars needing extra care and protection.

Consistent Quality and Price
Praised for its quality and competitive pricing, though price consistency is a concern.

-10%
#6
Castrol EDGE 5W-30 Advanced Full Synthetic Motor Oil, 5 Quarts

9.0

Castrol

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Why we love it

Exceptional viscosity breakdown protection.

Ideal for modern high-performance engines.

Noted for improving engine smoothness.

Main highlights

Superior Viscosity Breakdown Protection
3X stronger against viscosity breakdown than leading full synthetic oils.

Ideal for Modern High-Performance Engines
Perfect for engines needing high temperature and wear protection.

Praised for Engine Smoothness
Customers frequently note improved engine smoothness and performance.
#7
Quaker State Motor Oil, 5W-30, 5 Quart

8.9

Quaker State

-15%

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Why we love it

Durable wear and corrosion protection.

Ideal for stop-and-go driving.

Affordable and well-regarded brand.

Main highlights

Durable Wear Protection
Synthetic blend 5W-30 oil reduces engine wear and provides corrosion protection.

Ideal for Commuters
Perfect for daily commutes, from high-speed highways to stop-and-go traffic.

Highly Rated by Users
Praised for affordability and reliability, with a 4.6-star rating.

-15%
#8
Castrol GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 Quarts

8.7

Castrol

-11%

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Why we love it

Extends emission system life.

Reduces engine wear effectively.

Minimizes oil consumption.

Main highlights

Phosphorus Replacement Technology
Helps extend emission system life, reducing maintenance costs.

Ideal for High Mileage Vehicles
Perfect for older cars experiencing oil consumption and leaks.

Customer Praise for Oil Burn-Off Protection
Notable reduction in oil consumption, especially in high mileage vehicles.

-11%
#9
Castrol GTX Ultraclean 5W-30 Synthetic Blend Motor Oil, 5 Quarts

8.6

Castrol

-10%

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Why we love it

Excellent sludge and deposit protection.

Versatile for various engine types.

Convenient packaging for DIY oil changes.

Main highlights

Superior Sludge Protection
1.4X superior sludge protection compared to industry standards, ensuring cleaner engines.

Ideal for Older and Newer Engines
Perfect for both classic and modern gasoline engines, ensuring versatility.

Convenient 5-Quart Container
Praised for its easy-to-use, mess-free 5-quart container.

-10%
#10
Pennzoil Platinum Full Synthetic 5W-20 Motor Oil, 5-Quart

8.4

Pennzoil

-34%

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Main highlights

Provides better fuel economy (based on the latest industry standards)

Full synthetic 5W-20 motor oil that is made with natural gas and designed to maximize engine protection

Backed by a 15,000-mile protection guarantee* to protect your pursuit of every mile

-34%

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Our top 2 picks

#1

-46%

Shell Rotella T6 Full Synthetic 5W-40 Motor Oil, 1 Gallon (3 Pack)
The Shell Rotella T6 Full Synthetic 5W-40 Diesel Engine Oil offers exceptional protection and performance for a wide range of vehicles. Its Triple Protection Plus technology ensures robust defense against wear, deposits, and oil breakdown, making it a reliable choice for heavy-duty engines in pickup trucks, tractors, and semi rigs. This oil also enhances fuel economy by 1.5% compared to traditional 15W-40 oils, providing a cost-effective solution without sacrificing engine protection. Users consistently praise its ability to deliver smooth and quiet engine operation, as well as its versatility across various automotive and power sports applications. With a high customer satisfaction rating, this oil is trusted by long-term users for its quality and performance, offering peace of mind and longevity for your vehicle's engine.
#2

Castrol GTX Full Synthetic 0W-20 Motor Oil, 5 Quarts
The Castrol GTX Full Synthetic 0W-20 Motor Oil is a top-tier choice for maintaining engine health and performance. Its full synthetic formula provides superior wear protection, offering six times better protection than industry standards, as proven in the Sequence IVA test. Additionally, it excels in sludge management, providing 1.3 times better protection against sludge formation compared to API SP limits. This makes it ideal for those who prioritize long-term engine cleanliness and reliability. Customers consistently praise its quality, with many trusting it for over 25 years. The oil is competitively priced and well-packaged, making it a convenient and trustworthy option for vehicle owners seeking premium engine care. Whether you drive frequently or maintain a high-mileage vehicle, this motor oil is designed to keep your engine running smoothly and efficiently, ensuring peace of mind on the road.

engine oils

Shell Rotella T6 Full Synthetic 5W-40 Motor Oil, 1 Gallon (3 Pack)

9.6

Why we love it

Main highlights

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

9.5

Why we love it

Main highlights

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

9.4

Main highlights

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

9.3

Why we love it

Main highlights

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

9.1

Why we love it

Main highlights

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

9.0

Why we love it

Main highlights

Quaker State Motor Oil, 5W-30, 5 Quart

8.9

Why we love it

Main highlights

Castrol GTX High Mileage 10W-40 Synthetic Blend Motor Oil, 5 Quarts

8.7

Why we love it

Main highlights

Castrol GTX Ultraclean 5W-30 Synthetic Blend Motor Oil, 5 Quarts

8.6

Why we love it

Main highlights

Pennzoil Platinum Full Synthetic 5W-20 Motor Oil, 5-Quart

8.4

Main highlights

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Our top 2 picks

Shell Rotella T6 Full Synthetic 5W-40 Motor Oil, 1 Gallon (3 Pack)

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

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