Pro-Blend 4032 40-Below Engine Coolant Additive, 30 Oz.
- This product is discontinued.
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Reduces coolant temps up to 40° F. Prevents coolant temperature from rising excessively under extreme racing conditions. 30 oz. Use a 80% water and 20% Pro-Blend 40 Below mix.
NOTE: Do NOT use with propylene glycol antifreeze, stop leak, or block sealer. Can be used with distilled water and ethylene glycol antifreeze.
Learn more about how cooling systems work with proper coolant mixture and additives by reading our tech article. Cooling System Principles.