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Serious question, why does everyone at the truck stop think you need to idle the engine for 30 minutes before shutting down? It's bad for the truck.
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gracec1610d agoTop Commenter
It's actually to cool down the turbo, not the whole engine.
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gracec1610d agoTop Commenter
Oh man, you're totally right. I learned this the hard way after a long drive last summer. Letting it idle for a minute or two lets the oil keep circulating through that hot turbo. If you just shut it off, the oil can cook and gunk up the bearings. It's a cheap habit that saves you a huge repair bill later.
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lewis.finley10d ago
Yeah, I read something about that in an old car magazine. They said the turbo gets crazy hot after highway speeds, like glowing red hot sometimes. Shutting the engine off cuts the oil flow while it's still baking. Letting it idle for just a minute lets the oil carry that heat away. It seems like such a small thing, but it really does make those turbo parts last way longer.
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