10 Best coolants of 2025

Save up to 26% off

Best Choice

1

CAT

CAT 238-8648 Extended Life Coolant 50/50 Premix, Red - 1 Gallon Jug (Case of 6)
9.8

Exceptional

Our Rating
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Value for Money

2

Generic

Fleet Cool ES Complete Oat Antifreeze/Coolant, 50/50 Prediluted, 1 Gallon, 2-Pack. bitterment Agent Mixed in
9.6

Exceptional

Our Rating
3

PEAK
PEAK All Vehicles 50/50 Prediluted Antifreeze and Coolant for All Engine Cooling Systems, Long-Lasting Yellow Engine Coolant/Antifreeze for Year-Round Engine Protection, 1 Gal.

26% Off
Main highlights

Enhanced Cooling and Protection
Features a proprietary blend with 10X scale-fighting inhibitors for superior cooling and protection against damage.

Universal Compatibility
Ideal for any vehicle's cooling system, compatible with all antifreeze colors and types.

Long-Lasting Performance
Commonly praised for its extended warranty coverage, protecting engines for over 10 years or 300,000 miles.
9.4

Excellent

Our Rating
4

PEAK
PEAK OET Extended Life Orange 50/50 Prediluted Antifreeze/Coolant for North American Vehicles, 1 Gal.
Main highlights

Advanced Formulation Protects Engine
Prevents rust and corrosion, safeguarding all engine cooling system components.

Ideal for North American Vehicles
Designed for Ford, Chrysler, and GM vehicles requiring orange organic acid technology.

Easy Top Off with Predilution
Prediluted 50/50 formula simplifies topping off your cooling system.
9.1

Excellent

Our Rating
5

Valvoline

Zerex Dex-Cool 50/50 Ready-to-Use Antifreeze Coolant 1 GA

10% Off
8.9

Very Good

Our Rating
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6

PEAK
PEAK OET Extended Life Blue 50/50 Prediluted Antifreeze/Coolant for Asian Vehicles, 1 Gal.
Main highlights

Key Features
Prevents rust, protects engine components with a BLUE POAT formula. Includes bittering agent. 5-year/150,000-mile guarantee.

Ideal Use Cases
Best for Acura, Honda, Infiniti, Mitsubishi, Nissan, Subaru, Suzuki vehicles needing quick top-offs with a phosphate-enhanced coolant.

Customer Praise
Most reviews highlight its compatibility with Asian vehicles and ease of use due to pre-dilution, ensuring quick and efficient top-offs.
8.8

Very Good

Our Rating

9.9
Simple to use

9.7
worth the money

9.7
distance
7

Zerex
Zerex Asian Vehicle Green 50/50 Ready-to-Use Antifreeze Coolant 1 GA
Main highlights

Key Features
Offers unmatched freeze protection (-34F) and boil-over prevention (265F), with phosphate additives for corrosion, scale, and rust protection.

Ideal Use Cases
Perfect for all modern engines needing year-round temperature regulation and protection against leaks, without damaging gaskets, hoses, or finishes.

Customer Reviews Summary
Most praised for its ready-to-use formula, providing peace of mind with exceptional protection against extreme temperatures and engine damage.
Key specs
- Anti-Boil:Unsurpassed
- Corrosion Resistance:Phosphate additives
- Freeze Protection:Unsurpassed
- Compatibility:Universal
- Mix Ratio:50/50
8.6

Very Good

Our Rating

9.9
Simple to use

9.9
worth the money

9.9
distance
8

PEAK

PEAK OET Extended Life Pink 50/50 Prediluted Antifreeze/Coolant for European Vehicles, 1 Gal.
8.4

Good

Our Rating
9

Valvoline
Valvoline Multi-Vehicle 50/50 Ready-to-Use Antifreeze/Coolant 1 GA
Main highlights

Universal Compatibility
Compatible with all ethylene glycol-based coolants, protects all cooling system metals.

Ideal for All Vehicles
Perfect for all makes and models using ASTM D3306.

Customer Praise for Cooling Efficiency
Praised for effectively cooling down vehicles faster.
8.2

Good

Our Rating

9.3
Simple to use

9.1
worth the money

9.1
distance
10

PEAK

PEAK OET Extended Life Violet 50/50 Prediluted Antifreeze/Coolant for European Vehicles, 1 Gal.
8.1

Good

Our Rating

10 Best coolants of 2025

1

CAT 238-8648 Extended Life Coolant 50/50 Premix, Red - 1 Gallon Jug (Case of 6)

How do we rank?

How do we rank?

Analyzing top stores

2

Fleet Cool ES Complete Oat Antifreeze/Coolant, 50/50 Prediluted, 1 Gallon, 2-Pack. bitterment Agent Mixed in

3

PEAK All Vehicles 50/50 Prediluted Antifreeze and Coolant for All Engine Cooling Systems, Long-Lasting Yellow Engine Coolant/Antifreeze for Year-Round Engine Protection, 1 Gal.

4

PEAK OET Extended Life Orange 50/50 Prediluted Antifreeze/Coolant for North American Vehicles, 1 Gal.

5

Zerex Dex-Cool 50/50 Ready-to-Use Antifreeze Coolant 1 GA

6

PEAK OET Extended Life Blue 50/50 Prediluted Antifreeze/Coolant for Asian Vehicles, 1 Gal.

9.9

9.7

9.7

7

Zerex Asian Vehicle Green 50/50 Ready-to-Use Antifreeze Coolant 1 GA

9.9

9.9

9.9

8

PEAK OET Extended Life Pink 50/50 Prediluted Antifreeze/Coolant for European Vehicles, 1 Gal.

9

Valvoline Multi-Vehicle 50/50 Ready-to-Use Antifreeze/Coolant 1 GA

9.3

9.1

9.1

10

PEAK OET Extended Life Violet 50/50 Prediluted Antifreeze/Coolant for European Vehicles, 1 Gal.

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