Evans High Performance Coolant combines the benefits of Evans NPG+ and NPGR. NPG+c provides superior cooling protection for all gasoline and light duty diesel engines, including marine and light aircraft. In conditions ranging from -40F/C – 375F/190C. High Performance Coolant provides cooling protection through constant liquid coolant contact with engine metals. Eliminates water-causing corrosion, electrolysis and cavitation. One successful installation provides cooling protection for the life-time of the engine, reducing maintenance time and expense.