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Originally Posted by Old Mechanic
In 45 years working on cars, I have never seen an engine that would not warmup that was not fixed with a properly operating thermostat.
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Bet you never looked at a Gen1 Insight, then :-) In cold weather, it simply won't warm up to full operating temperature at idle. Even with a radiator block, it takes 10+ miles of driving at 50-60 mph to get up to temp. (On level roads, of course: the couple of miles of 5-6% grade going the other way from my house get it close.) Which of course means that idling to warm up the engine is pretty useless.
Though I have to say that I'm not real impressed with the article overall. Take the crap about
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Driving too far over the speed limit forces you to brake hard, fast and abruptly...
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Not allowing adequate separation from other cars (and things like deer & cows) is what forces you to brake hard. Plenty of places around here where I could do 100 mph (were I so inclined :-)), and never have to touch the brakes at all.