Re: Optimium engine temp?
I've never measured my trucks temp, but I just replaced my entire cooling system, and the thermostat I installed was a 180 degree. That's what was in it before...although it appears that for several years it probably wasn't working to well, if at all.
I can watch the temp rise until the thermostat opens, then it drops back down a needle width or so. So I would say mine normally runs at about 165?? That sounds on the cool side, but it's just a guess.
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