California Proposition 65: This product contains a chemical known to the State of California to cause cancer. Protect metals in all weather conditions with this ready-to-use antifreeze coolant from Peak.This pre-diluted antifreeze coolant has a freezing point of -34 Degrees degrees and boiling point of 224 Degrees degrees. The specific gravity is 1.070 to 1.080 and the pH is 10.5 to 11. This 1 gal. green antifreeze coolant meets standards: ASTM.It comes conveniently pre-diluted so you won't have to fuss with adding water. Its applications include: Universal formula for older automotive and light-duty diesel applications offers protection against rust and corrosion. Compatible with all conventional (green) antifreeze. IAT formula. For use with automotive.