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D 15 engine oil
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ACinSC View Drop Down
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Joined: 16 Dec 2015
Location: South Carolina
Points: 3055 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ACinSC Quote  Post ReplyReply Direct Link To This Post Topic: D 15 engine oil
    Posted: 13 hours 27 minutes ago at 5:33pm
Another dumb question, maybe. When I check the oil with a cold engine it's a touch low. After engine warms up oil level is on the line. Seems it should be the other way around to me. Thanks for any insight
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steve(ill) View Drop Down
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Joined: 11 Sep 2009
Location: illinois
Points: 88476 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 13 hours 18 minutes ago at 5:42pm
Google...

Yes, oil expands when it gets hot, a phenomenon known as thermal expansion. This is why it's important to check engine oil levels after the engine has been running for a few minutes and then has been allowed to sit for a few minutes to drain back into the oil pan, as checking it when cold can lead to overfilling if it's topped off to the "full" mark
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Joined: 12 Sep 2009
Location: Shelbyville IL
Points: 8675 		Post Options Post Options   Thanks (0) Thanks(0)   Quote SteveM C/IL Quote  Post ReplyReply Direct Link To This Post Posted: 10 hours 15 minutes ago at 8:45pm
Steve,is what you say in the manual? Never heard of warming a little then setting to check oil. Can't imagine full cold could grow enough hot to matter.
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Joined: 11 Sep 2009
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Points: 88476 		Post Options Post Options   Thanks (0) Thanks(0)   Quote steve(ill) Quote  Post ReplyReply Direct Link To This Post Posted: 9 hours 30 minutes ago at 9:30pm
i dont know about manual.. this is just a GENERIC comments about oil expansion due to heat... It can happen... E J just wanted an explaination of WHY the level changed with temp... I normally check oil level cold and call it good..

Edited by steve(ill) - 9 hours 28 minutes ago at 9:32pm
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Points: 3055 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ACinSC Quote  Post ReplyReply Direct Link To This Post Posted: 2 hours 11 minutes ago at 4:49am
Thanks Steve I didn't think about oil expansion. Makes sense. Guess if I add a little oil to get the level on the full line it wouldn't hurt anything?

Edited by ACinSC - 2 hours 8 minutes ago at 4:52am
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