DESCRIPTION UltraCool Universal Antifreeze + Coolant CONCENTRATE (Orange) is a premium, ethylene glycol antifreeze + coolant for heavy-duty diesel, gasoline, and natural gas-powered engines that protects your complete cooling system all year-round. It can be used in both aluminum and conventional metal engine cooling systems of heavy-duty diesel engines, automobiles, trucks, marine and industrial stationary equipment. Formulated with deionized water, a low silicate rust and a corrosion inhibiter system that effectively alleviates gel formation problems and prevents radiator heat transfer capacity loss. UltraCool Universal Antifreeze + Coolant CONCENTRATE (Orange) is formulated to meet today's automotive engines stringent aluminum corrosion protection requirements due to its low silicate concentration. Meets the low silicate limits of GM 6038M. Highlights: Universal formula for both automotive and heavy-duty diesel engines (ASTM D 3306 and ASTM D 4985). Protects against corrosion of boil-over protection. Phosphate-free with low silicate. High-quality defoamer system, non-harmful to hoses, plastic, or gaskets. Universal formula. Suitable for all major vehicle makes and models. Compatible to mix with other brands of Heavy-Duty antifreeze/coolant. All colors. Formulated for new engine model cooling systems but aldo suitable for cars and trucks (2000 and older).