10 bestCoolant Additivesof May 2025
112M consumers helped this year.
1
Red Line 80204 Water Wetter -12oz. 2 Bottles
Red Line
9.8
2
Engine Ice TYDS008 High Performance Coolant - 0.5 Gallon
Engine Ice
9.6
3
Prestone AF2000 Extended Life Antifreeze - 1 Gallon
Prestone
9.4
4
Zerex Asian Vehicle Blue Silicate and Borate Free 50/50 Prediluted Ready-to-Use Antifreeze/Coolant 1 GA
Zerex
9.1
5
Royal Purple 01600 Purple Ice Super-Coolant Radiator Additive, 12-Ounce
Royal Purple
8.9
Other
Zerex Original Green Antifreeze/Coolant - 1 Gallon
Royal Purple 01600 Purple Ice Radiator Coolant Additive 12 oz. Bottle Pack of 4
Engine Ice Hi Performance SXS/ATV Anti-Freeze Coolant 1/2 Gallon (12556)
Liqui Moly Radiator Stop Leak | 250 ml | Cooler additive | SKU: 20132
6
Land Rover Genuine OEM Orange Coolant
Land Rover
8.7
7
Zerex ZXELRU1 DEX-Cool Antifreeze/Coolant - Gallon
Valvoline
8.4
8
Zerex ZXGO51 G-05 Antifreeze - Gallon
Valvoline
8.2
6% off
9
Prestone AF850 Dex-Cool 50/50 Antifreeze - 1 Gallon
Prestone
7.9
5% off
10
Zerex 675130 Asian Vehicle Anitfreeze/Coolant - Gallon
Zerex
7.6
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