COOLELF HD N-OAT is the premium product of our cooling liquid range. COOLELF HD N-OAT is a «long life» coolant based on monoethylene glycol andorganic inhibitors of corrosion. COOLELF HD N-OAT is a cooling liquid that can be used in all cooling systems of combustion engines in Off Highway trucks, constructing & mining machines. COOLELF HD N-OAT is based on Organic Acid Technology (OAT) with addition of Nitrites & Molybdates.