Thread: Warm-up Time ?
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Old 05-13-2008, 03:43 PM   #16 (permalink)
Gittyup
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Join Date: Oct 2007
Location: Mid Atlantic
Posts: 433
Default Re: Warm-up Time ?

As I was told by the old time mechanic, if you turn it off while the valves are moving fast and hot, it causes the seals to leak prematurely, and then it starts to burn oil. It makes some sense to me. I have some engines that will sometimes backfire if turned off without letting them idle down for a while beforehand. On these, I can even hear a slight change in the pitch of the engine after slow idling for several seconds.
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