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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 07-17-2007, 03:57 PM   #1
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Default Burning oil

I have had to put in 2 quarts of oil in the past month. It seems like it is burning oil alot lately.It has 122k on her, but I do not see any leaks or that it burns smoke. I have noticed a lack of power...any suggestions?
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Old 07-17-2007, 05:57 PM   #2
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Compression check. Both wet and dry.
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Old 07-17-2007, 05:59 PM   #3
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Default oil

ditto on the Compression check, also your PCV could be stuck open, or not sealed with an o-ring properly.
3800'* that are maintained usually don't burn oil.
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Old 07-17-2007, 08:19 PM   #4
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Default Re: oil

Quote:
Originally Posted by SSEBONNE4EVA
ditto on the Compression check, also your PCV could be stuck open, or not sealed with an o-ring properly.
3800'* that are maintained usually don't burn oil.
Usually would be the key word... LOL

My 91, My freinds 91 Park Ave, Brads 94 SSE don't burn a drop...

My 95.... well it likes to have 3/4 to 1 Quart per 3000 miles.... Been like this for the 9.5 years I have owned it, I have tried may different oils and got the same result.. A lot of 95'* with the L36 I have seen use oil... Might have had something to do with it being in the first year of production...

Burning 2 Qurats that fast would make me do a Compression test tho, and as stated check the PCV valve...

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Old 07-18-2007, 11:26 AM   #5
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Default Oil Usage at 122,000 mileage

[
Quote:
Fm > Bloodstripe

It has 122k on her
Should one consider, first, the valve guide seals.
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Old 07-18-2007, 11:30 AM   #6
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Valve stem seals are not a very common failure on our engines. Even with very high miles.
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Old 07-18-2007, 12:06 PM   #7
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Is it BURNING oil, or LOSING oil? If it'* "burning" 2 qt/mo I'd think it would be smoking like 1967 hippie. You ought to be able to see blue smoke coming out the tailpipe. You ought to at least be able to smell it. If it is smoking, does it smoke more when you step on the gas (indicative of bad rings), or when you're decelerating (characteristic of worn valve guides/seals)?

Either way, I think you need to determine whether your losing or burning oil before you go too much further.
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Old 07-18-2007, 12:07 PM   #8
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Smoking on startup would be another indicator of valve guid seals. But not at 2 qts a month.
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Old 07-18-2007, 12:30 PM   #9
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Quote:
Originally Posted by willwren
Smoking on startup would be another indicator of valve guid seals. But not at 2 qts a month.
Agreed.

Take a look underneath and look for any wetness. This much has to be going somewhere
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Old 07-18-2007, 12:50 PM   #10
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Quote:
Originally Posted by willwren
...Smoking on startup would be another indicator of valve guid seals...
Boy, howdy! WillWren speaketh not with a forked tongue. I had a couple Hondas that puked a huge cloud of blue smoke on (cold) startup due to bad valve guides. Very good indicator.

If you're burning 2 qts/mo there wouldn't be a mosquito for miles around your house.
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