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Showing results for tags '6038-M'.
This truck is new to me and it needs the cooling system flushed and the coolant replaced. The owner's manual calls for coolant that meet "GM Specification 6038-M". That spec is no longer supported and it NLA. After some research, I thought I was doing the right thing by getting... Prestone Antifreeze/Coolant GM Vehicles Dex-Cool CONCENTRATE *5 Year/150K Mile Protection* 1 Gallon (Part # AF888) which I plan to dilute, of course. But, upon seeing the jug, it says it is orange and specified for '95 and later GM models. I am on the wrong track? If so, what should I be using?