I have been using Dexcool (the orange antifreeze) in my 428 for about a year now with what I think are good results. Motor seems to run a little cooler and the crud that always used to build up in the cooling system does not seem to happen anymore. Now I hear that Dexcool should not be used in older vehicles especially ones with the brass/solder radiators. Why, who knows, but they say don't use it. Anyone hear anything about this?
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