common oil leaks? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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 04-23-2006, 04:08 AM   #1
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Default common oil leaks?

i'm almost done with my bonne'* mid-life maintenance..next up is oil leakage...i know my pan is leaking as well as my valve covers...is there any other common oil leaks i should check for?...I seem to drop the most oil on the belt side of the engine(could be from the pan) but i cant figure out where it could be leaking over there...any idea'*?
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Old 04-23-2006, 10:20 AM   #2
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I would guess timing cover.
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Old 04-23-2006, 11:19 AM   #3
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Mine likes a small amount on were the tranny and the engine meet ,but enough to change the oil level any noticable amount of 3000 miles. That would be kind of pain to fix. Vaule covers are easy to do.
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Old 04-23-2006, 12:40 PM   #4
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Valve Covers and Oil pan gaskets are common on the series II engines as well some end up with a leaking rear main on the series II'*.. I have been lucky in that department so far...

On the oil pan gasket, does your car have the cast alluminum pan or the stamped steel pan?

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Old 04-23-2006, 02:40 PM   #5
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Quote:
Originally Posted by jr's3800
Valve Covers and Oil pan gaskets are common on the series II engines as well some end up with a leaking rear main on the series II'*.. I have been lucky in that department so far...

On the oil pan gasket, does your car have the cast alluminum pan or the stamped steel pan?
i'm not sure but it looks like it could possibly be aluminum..though it'* not dented or anything so it could be steel..either way i am gonna make sure a gasket goes on rather than a sealant..that is if a gasket is available for both.

I'll definatly check the timing cover as well..i dont think its the engine/tranny gasket..though i did have to have the tranny-axle boot replaced about a year ago..
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Old 04-23-2006, 03:47 PM   #6
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When you look under the car is the pan Black as in painted black? If it is it should be the stamped steel pan... The gasket is interesting, and I think you will need to remove the pil sump screen to remove it...

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Old 04-23-2006, 05:57 PM   #7
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Quote:
Originally Posted by jr's3800
When you look under the car is the pan Black as in painted black? If it is it should be the stamped steel pan... The gasket is interesting, and I think you will need to remove the pil sump screen to remove it...
nah it'* "metal-ish" and acoustic when thumped so i assume its the aluminum pan...is a gasket there/or available for the alum. pans?
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Old 04-23-2006, 11:53 PM   #8
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97 is stamped steel

When you go to do the pan.. get some GM engine sealer..use that.. I did my gasket and still have leaks.. Now I got some sealer..and doubt I'll have any leakage..
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Old 04-24-2006, 01:16 PM   #9
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Thats strange... I pulled my oil pan to knock out a nice dent... And reused the gasket/windage tray and its still bone dry

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Old 04-24-2006, 01:18 PM   #10
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I re-used my old 93 gasket as well. Not a drop.
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