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International Automotive Technicians Network
Re: Cooling system Backfill and purge
Posted to Technical Tips Forum on 3/20/2020

A lot of people do not realize that a engine thermostat has to be in the hot coolant to work properly. Trapped hot air will not open a thermostat quick enough (if at all). I have seen a lot of damaged engines over the years because people did not understand th... Login to read more.