Designed as an Automotive antifreeze/coolant. Super Tech Extended Life Prediluted 50/50 Extended Life is specially formulated with industry-leading additives to provide optimum performance in all makes and models of cars and light-duty trucks. It is ideal for top-off or drains and fills and provides up to 5 years or 150,000 miles of protection. This convenient 3-pack allows you to flush and fill most automotive radiator reservoirs with one purchase.