ES Compleat EG Premix 50/50 is a fleetguard premix coolant that acts as a powerful protection for your engine. Other than being able to give the maximum protection in the harshest environment, many issues can be avoided when you choose the right coolant. Also available in both 50/50 and 60/40 concentrations that you can choose, fleetguard premix coolant offers various protection including antifreeze, antiboil, corrosion, liner pitting and many more. With the unique organic acid technology that is free from nitrite, phosphate, silicate and amine, fleetguard premix coolant is suitable to be used in diesel, gasoline and natural gas engines.