Waterless coolant protects against corrosion and electrolysis. Dramatically reduced vapor pressure. Improves engine performance. Lasts the life of your engine.
EVANS is a high-end, relatively expensive coolant.
Protects engine from rust and corrosion. Reduces risk of deposits in cooling system. Antifreeze works against freezing down to -34°F. Keeps engine from boiling over. Affordable.
Zerex works across the board as a coolant and antifreeze, but it doesn’t feature bonus protections offered by competing products.
Protects against rust and corrosion. Moderately priced. Extra-low freezing point. Biodegradable. Raises cooling system’s boiling point to 265°F.
We wish that Coolanol was available in bottles larger than 64 ounces.
Quickly reduces operating temperature. Non-toxic propylene glycol formula. Seals pinhole leaks. Protects against freezing temperatures down to -26°F. Promotes an engine’s maximum horsepower.
A fairly pricy coolant, but its additional engine-protecting features makes Star-Cool a premium coolant.
Impressive -50°F antifreeze protection. Biodegradable. Nontoxic. Great for winterizing marine vehicles. Prevents corrosion. Inexpensive. Large 1-gallon bottle.
This marine antifreeze is best for cooler climates, so look elsewhere if you prefer warmer waters.
We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.