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International Automotive Technicians Network
Re: prestone extended life is not propylene glycol
Posted to Technical Discussion Forum on 2/13/2003

Jason, the oil gelation is a direct result of the organic acid in Dexcool (some other products also contain the same acid). Ethyl hexanoic acid reacts with calcium and lithium oil additives and creates grease in the most severe instances. It will definitely th... Login to read more.