Coolant Mixture

Engine coolant must be mixed with water to a specific percent. A 100 % coolant mixture could cause system overheating or premature system failure. Coolants are designed to function best when mixed with water. The percentage of coolant to water can vary depending on climate condition, but a 50/50 mixture is a standard percentage. Engine coolant should also include an aluminum protection additive. This will help protect against metal deterioration.