A 1990 Freightliner running on waterless engine coolant from Evans Cooling Systems has traveled one million miles in 23 years without requiring a coolant change, coolant fill or the use of supplemental additives. Joe Umstead, an owner-operator, converted to the waterless coolant provided by Evans in the Detroit Diesel Series 60 engine when he purchased his new truck.
Evans waterless coolant has a boiling point of 375°F and at operating temperatures has a very low vapor pressure. The low pressure, according to the company, reduces stress on cooling system components and hoses, and without water metals in the engine do not suffer the effects of corrosion, electrolysis or cavitation erosion.