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Only read the first part, but he seems to have missed a pretty important point when he says that engines are designed to run at 212F (or whatever - 195F is the thermostat temp for mine). The fact is that it's not going to be at that temperature a lot of the time. Even a moderately cold winter's day means it'll take 10 miles or more of highway driving to come up to speed, and on a long descent it'll drop to 140 or less.
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