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97 SLS
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114 Posts
Discussion Starter #1
Hello everyone,

I found some engine oil sitting in the plug wells when I changed the spark plugs last week. There was more oil on top of some plugs than others, and two or three were clean. My engine does leak/eat about a quart of oil every 2500 miles.

Valve cover gaskets?
 

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Sedan de Ville, CTS
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4,764 Posts
That is the cause. You can perhaps tighten them if you do not crush them. Or just wash that part of the engine off once per year.
 

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Super Moderator
White Diamond '03 DHS (with DTS floor shift)
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86,979 Posts
It is the plug well "O" ring seal in the cam cover that has seeped a bit. Consider how long and how many miles it took to accumulate. Wipe it out and then do it again next time change the plugs (in another 100K).
 

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Registered
97 SLS
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114 Posts
Discussion Starter #4
Thanks guys, I will clean them out and see how long it takes to accumulate. If it pools alarmingly quickly, I'll post back for a fix.
 
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