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1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 09-07-2004, 05:29 PM   #1
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Default Engine Oil Leak

95 SE Series II, 135,000 mi, has been leaking considerable oil for at least 20 thousand miles; tightening the pan bolts didn't stop it. Didn't find much in Search, so maybe it'* just my isolated problem. Any ideas out there? Thanks.

On another topic, saw lots of posts about rotor warping. Agree w/all about replacing, but when it needs to be very frequent, suspect caliper and/or brake hose.
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Old 09-07-2004, 06:23 PM   #2
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We need more specifics regarding where you see the oil. And you should probably start by fully cleaning the engine before trying to narrow it down. Oil leaks aren't common, but can be fairly easy to track down.
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Old 09-07-2004, 08:25 PM   #3
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I don't know if this is anything for the L27, L36, or L67, but it is believed my intake seals are leaking [willwren has for the most confirmed this, but there are always other possibilties]. Yours may have the same problem, please go to my thread here:

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Old 09-10-2004, 11:44 PM   #4
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My oil pan was leaking also. Tightening the pan bolts likewise did no good. The only solution was to replace the pan gasket. It was very easy to do. The only thing in the way is the small flywheel cover (two 10mm bolts). You should remove the oil level indicator first so as not to break it. I did it without removing it and it can be done but be advised it is about 2-3 " long so be gentile and don't pull the pan straight down or you'll be replacing it too.
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