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Yellow sludge under oil cap?

Generation III Internal Engine 1997-2006 LS1 | LS6

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Yellow sludge under oil cap?

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Old

Nov 28, 2009 | 02:55 PM

#1

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From: San Antonio, TX

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Yellow sludge under oil cap?

I just noticed this... any ideas?

Old

Nov 28, 2009 | 03:07 PM

#2

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um that looks like some major water contamination in the oil. I know a slight amount of yellow under the cap is "ok," but that isnt slight. I would check your oil and or drain it to see if there is any more in the pan quickly

Old

Nov 28, 2009 | 03:08 PM

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That is I belive, and I don't pretend to know a lot, but I think that is moisture in the oil. Happens if you do a lot of short trip driving. Might be wrong tho. My old 97 had that start happening when I only worked a few blocks away from where I lived at the time.

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Nov 28, 2009 | 03:09 PM

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that would be moisture from the oil. no big deal. lots of short trips where the motor doesn't get hot enough to burn it off.

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Nov 28, 2009 | 05:16 PM

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that is from short trips for sure. but check the oil it could be bad enough for a headgasket if you see that on the dipstick

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Nov 30, 2009 | 04:11 PM

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Every year about this time several threads like this pop up....cold temps + oil not getting hot enough to burn off condensation.

Old

Nov 30, 2009 | 07:31 PM

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+ 1 to the short trip thing. Also, give your PCV system a once over, change the PCV valve to make sure its functioning properly.

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Old

Jan 15, 2010 | 01:56 PM

#8

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I haz that in the LT1 fleetwood. Just doing a much neglected oil and filter change and said to meself; "wtf self ?!?!?!!".

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Old

Jan 15, 2010 | 07:27 PM

#9

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From: Hellertown, PA

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its just condensation from short trips like you were told above it doesn't mean your oil is bad. just try and take it on a long trip to evaporate that moisture.

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2006, 383, 48l, burning, cap, chevy, condensation, moisture, oil, oilcap, reason, silverado, sludge, stroker, white, yellow

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