PEAK Ready use LONG LIFE Coolant feature 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. Its inhibitors provide maximum cooling system protection against damaging rust and corrosion. PEAK Ready use LONG LIFE Coolant cab be use to top-off cooling systems filled with any automotive coolant. However, to realize the 150 000 miles or 5 years of maximum cooling protection of complete cooling system flush and fill is required.