Peak Long Life 50/50 prediluted antifreeze and coolant offers all of the same benefits in a convenient pre-diluted antifreeze with no need to add water. Its inhibitors provide maximum cooling system protection against damaging rust and corrosion. Additional benefits include an amber color that will not change the current antifreeze color when used for topping-off and a phosphate and silicate-free formula. It’s contains a Long Life coolant technology that is compatible for use in all automobiles and light-duty trucks - regardless of make, model, year or original antifreeze color. Compatible for use in all automobiles and light-duty trucksYellow color will not change the current antifreeze color when used for topping-offFeatures a phosphate-free and silicate-free formulaProvides 150,000 miles or 5 years of maximum protection when a complete cooling system flush and fill is performedMeets ASTM D-3306 and ASTM D-4340Freezing point of -34 degrees F with 15 PSI pressure cap