10 Best 5w20 synthetic motor oils of 2025

Save up to 37% off

Best Choice

1

Mobil
Mobil 1 Advanced Full Synthetic Motor Oil 5W-20, 6-Pack of 1 quarts
Main highlights

Key Features
Protects against engine damage, extends oil change intervals to 10,000 miles, meets ILSAC GF-6 standards, and offers high and low-temperature protection.

Ideal Use Cases
Best for vehicles requiring 5W-20, perfect for high-performance engines, and suited for extreme weather conditions from hot to cold.

Customer Reviews
Most praised for significantly smoother engine performance and longer lasting protection, leading to noticeable improvements in fuel economy.
9.6

Exceptional

Our Rating

9.9
Sheerness

9.9
Long life

9.9
distance
How do we rank?

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Based on millions of stores and reviews

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Analyzing top stores
Value for Money

2

Valvoline

Valvoline Restore & Protect Full Synthetic 5W-20 Motor Oil 5 Quart

25% Off
9.3

Excellent

Our Rating
3

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

37% Off
Main highlights

MaxLife Technology Benefits
MaxLife Technology prevents engine breakdown with 40% better wear protection, includes seal conditioners to reduce oil consumption and leaks, and advanced additives for performance.

Ideal for High Mileage Engines
Perfect for vehicles with high mileage, especially those experiencing minor oil leaks or requiring enhanced wear protection and improved fuel efficiency.

Customer Praise for Leak Prevention
Customers frequently praise the oil's ability to stop minor leaks and oil seeps, enhancing the longevity and performance of older engines.
9.2

Excellent

Our Rating

9.9
materials Quality

9.7
For travel

9.5
worth the money
4

Mobil

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

16% Off
9.0

Excellent

Our Rating
5

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

25% Off
Main highlights

Advanced_Protection_Features
Provides advanced protection against wear, friction, heat, and deposits with 40% better wear protection and 25% better deposit protection.

Ideal_for_High_Performance
Perfect for maintaining performance and longevity in vehicles, especially in cold temperatures and for engines requiring full synthetic oil.

Customer_Praise_for_Durability
Customers frequently praise its durability for 5-7k miles and its cost-effectiveness, with many noting no engine problems over long-term use.
8.7

Very Good

Our Rating

9.9
quality of ingredients

9.9
lasts a long time

9.7
worth the money
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6

Castrol

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

17% Off
8.6

Very Good

Our Rating

9.9
Temperature control

9.7
lasts a long time

9.3
worth the money
7

Castrol

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

17% Off
8.4

Good

Our Rating
8

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

Key Features
Offers 6X better wear protection, 1.3X superior sludge protection with a full synthetic formula for high thermal and oxidation stability.

Ideal Use Cases
Perfect for vehicles frequently facing harsh driving conditions, high temperatures, or those requiring extended performance and engine life.

Customer Reviews Summary
Most praised for significantly reducing engine wear and noise, leading to smoother performance and longer engine lifespan.
8.3

Good

Our Rating

9.9
Long life

9.9
distance

9.7
worth the money
9

Pennzoil
Pennzoil Ultra Platinum Full Synthetic 5W-20 Motor Oil, 1 Quart

34% Off
Main highlights

Unbeatable Engine Protection
Pennzoil Ultra Platinum provides exceptional protection with a 20-year, 750,000 mile warranty, ensuring peace of mind for every drive.

Ideal for High-Performance Engines
Designed for high-performance engines, this oil excels in extreme temperatures, preventing power loss and ensuring optimal performance.

Praised for Wear Protection
Customers frequently commend its unsurpassed wear protection, as proven by the Sequence IVA wear test with SAE 5W-30.
Key specs
- viscosity:5W-20
- vehicle type:Car
- package dimensions:8.75 x 4 x 2.5 inches
- oem part number:550040863
- flash point:N/A
8.2

Good

Our Rating
10

Castrol

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

13% Off
8.1

Good

Our Rating

10 Best 5w20 synthetic motor oils of 2025

1

Mobil 1 Advanced Full Synthetic Motor Oil 5W-20, 6-Pack of 1 quarts

9.9

9.9

9.9

How do we rank?

How do we rank?

Analyzing top stores

2

Valvoline Restore & Protect Full Synthetic 5W-20 Motor Oil 5 Quart

3

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

9.9

9.7

9.5

4

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

5

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

9.9

9.9

9.7

6

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

9.9

9.7

9.3

7

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

8

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

9.9

9.9

9.7

9

Pennzoil Ultra Platinum Full Synthetic 5W-20 Motor Oil, 1 Quart

10

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

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