yelloish apple paste like thing in under oil cap

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Mar 7, 2010 | 05:31 PM

a4avant99

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yelloish apple paste like thing in under oil cap

What's that? This actually happened on my neibgher's Jetta.

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Mar 9, 2010 | 04:56 PM

thecharlum

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Looks to me like someone put some grease in there thinking it would make the engine run smoother...

It is possible it is oil that has previously been whipped up and has oxygen bubbles suspended in it. Oxygen in the oil would cause it to foam up. it would rise until it reached the oil filler cap. and then once the foam went down it would leave this oil behind.

After a good drive check the dipstick for bubbles, and check the cap for some new foamy oil. If it is in the cap it is possible the valve cover gaskets are leaky. There may be a drop in oil pressure who knows. I say clean it out and see if it comes back.

Mar 9, 2010 | 08:31 PM

audiTLC

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lots of short trips? incomplete moisture burnoff will build up like that

or it could be a blown headgasket

Mar 10, 2010 | 03:01 AM

4Driver4

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Needs moAr highway driving to get rid of that condensation.

Mar 10, 2010 | 04:37 PM

Gomer

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If the oil and coolant levels are at spec then 4Diver4 is correct.Coolant level down and oil level up would point towards the blown head gasket as mentioned on previous post.