Peak Conventional Green Antifreeze is made specifically for vehicles that are older. For Ford and Chrysler it can be used in anything 2000 and earlier. GM can be used in anything 1995 and earlier. For all makes and models 1989 and earlier. It can be used in vehicles that require the following certifications Chrysler/FCA MS-7170, Ford ESE-M97844-A, General Motors GM 1899M, GM 1825M, TMC RP 302C, and SAE J814. It also meets or exceeds ASTM D3306 and D4985 specifications. Peak Conventional Green Antifreeze 50/50 contains freeze protections to -84°F (At sea level atmospheric pressure with 15lb) and boil over protection up to 276°F. The boiling point decreases about 2˚F per 1,000 feet of altitude and increases about 2.5˚F per pound developed in the system.