Keyser Manufacturing’s 40 Below coolant additive is designed to reduce temperatures by up to 40 degrees F. The additive maintains coolant temperature between 180-210 degrees F when (1) 32 oz. can is added to a full system (mixture of 80 percent distilled water/20 percent ethylene glycol). 40 below can be used with anti-freeze, but for best results use without.
**Under no circumstances should you use or mix with Dexcool**
40 Below works wonders in your street rod, RV, race car or anything with a high performance motor. Try it just once and you’ll be hooked.
NOTE: Shipping to Continental United States Only. No P.O. Boxes. Ground Shipments only.