Tropical Battery red oil based coolant. Protects freezing up to 0°f(-18°c) and the boils over to 259°f(126°c)* with ethylene glycol based formula and the newest OAT generation additive to protect rust, corrosion and electrolysis. is compatible with all make/models of gasoline fuel passenger cars and light trucks. Can be used with all colors. Protects all engine metals and alloys. Prevents overheating, built over and freezing. Meets or exceeds ASTM D3306, ASTM D6210, TMC RP329, VW G11, G12, G12+ and G13.