Question about 1989 Cadillac Sedan DeVille

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Leaking at the oil filter

Only leaks when the car is runing

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  • 27 Answers

Check to see if there are two gaskets. if the rubber gasket from the old filter is stuck on from the change then you have 2 gaskets on top of each other. being rubber when oil starts flowing they won't maintain rigidity because the one stuck on from before won't have the metal lip of the filter holding it

Posted on Dec 09, 2013

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Posted on Jan 02, 2017

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dennymulford
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SOURCE: Leaking oil

rear main seals dont just stop leaking it sounds like its your valve cover gaskets leaking and running down

Posted on Mar 04, 2009

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SOURCE: Oil Leak on engine drips down from oil filter

i had the same issue. turned out to just be a plasic o ring cracked. theres a metal line that runs out from the mounting area of the oil filter next to the oil pressure sending unit that is for cooling oil (youll have to get the air box out of the way to access it). disconnet that line and there it is. i looked all over to try and find a plastic o ring and no one had it. i slapped a plain ole rubber o ring on there and WA LA! no more oil stains on my drive way.

Posted on Jun 01, 2010

duane_wong
  • 6826 Answers

SOURCE: why is my car leaking oil its a 1995 cadillac

well, oil seals get old and an engine is still considered to be good, according to what I have read on the Internet, if it consumes less than 1 quart per 1000 miles.And, one should change the oil every 3,000 mi. according to most reputable oil change garages.

Granted if it's leaking any oil, that is not ideal.

Rubber seals and gaskets can get oil soaked and spongy or tightness of bolts that hold gaskets on can be too loose (but I wouldn't overtighten bolts as they only go in so far)..

Posted on Jul 02, 2010

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