10 Best 5w 20 full synthetic oils of 2025

Save up to 34% 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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Value for Money

2

Valvoline

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

25% Off
9.3

Excellent

Our Rating
3

Mobil

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

16% Off
9.1

Excellent

Our Rating
4

Valvoline

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

25% Off
8.9

Very Good

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.
8.6

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

17% Off
8.4

Good

Our Rating
7

Castrol

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

17% Off
8.3

Good

Our Rating

9.9
Temperature control

9.7
lasts a long time

9.3
worth the money
8

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
- package dimensions:8.75 x 4 x 2.5 inches
- oem part number:550040863
- vehicle type:Car
- flash point:N/A
8.2

Good

Our Rating
9

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.
8.1

Good

Our Rating

9.9
Long life

9.9
distance

9.7
worth the money
10

Castrol
Castrol Edge Extended Performance 5W-20 Advanced Full Synthetic Motor Oil 5 Quart

23% Off
Main highlights

Extended Performance and Protection
Castrol Edge 5W-20 offers 20,000 miles between oil changes, maintains viscosity under extreme conditions, and provides unsurpassed wear protection with a proprietary titanium additive.

Ideal for Modern Engines
Best for newer vehicles requiring GM dexos1, Ford WSS-M2C153-H, WSS-M2C930-A, WSS-M2C945-A, Chrysler MS 6395, exceeding ILSAC GF-5, API SN, ACEA A1, ACEA B1.

Enhanced Engine Smoothness
Customers frequently praise the significant improvement in engine smoothness, reduced friction, and overall performance enhancement with Castrol Edge 5W-20.
Key specs
- viscosity:5W-20
- package dimensions:11.8 x 9.5 x 4.5 inches
- oem part number:03086
- vehicle type:N/A
- flash point:N/A
8.0

Good

Our Rating

10 Best 5w 20 full synthetic 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

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

4

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

5

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

9.9

9.9

9.7

6

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

7

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

9.9

9.7

9.3

8

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

9

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

9.9

9.9

9.7

10

Castrol Edge Extended Performance 5W-20 Advanced Full Synthetic Motor Oil 5 Quart

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