1986 Volkswagen Jetta Creamy Oil

1986 VOLKSWAGEN
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AZTRALSOUL
  • MEMBER
  • 1 POST
Yikes....I have an 86 Jetta and recently when I went to put oil in it, when I lifted the cap there was this light brown, creamy (not bubbly) stuff all over the inside of the cap and in the tank. Traces of it was on the dipstick as well. Its got me a bit worried. Any one with any ideas what it might be.
Jan 29, 2006 at 6:22 AM
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LOVESCARS
  • ✓Experienced Mechanic
  • 359 POSTS
have the head checked sounds like water in the crankcase. bo good! have checked asap
Jan 29, 2006 at 11:03 AM
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MIKEYDEP
  • MEMBER
  • 29 POSTS
the kinda milkshake looking stuff on the inside of your oil filler cap is condensation.
what happens, is that when the car sits overnight or such, the cooler night air causes water condensation there. make sure the cap has a good seal.
replace if neccesary.
wipe out that gunk every time you look at it.
this also happens when a car is used for short trips,
the oil doesn't really get a chance to get to full operating temperature. take it for a long drive on the highway...
Oct 13, 2007 at 12:17 AM
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Suggested Repair

Have the cylinder head checked as soon as possible, since the creamy residue may indicate water in the crankcase.

Conversation Summary

The owner of a 1986 Jetta found a light brown, creamy substance inside the oil filler cap and filler area, with traces on the dipstick. An expert said this sounded like water in the crankcase and advised having the head checked promptly. Another participant said similar residue on the filler cap can be condensation from overnight cooling or short trips, and suggested ensuring the cap seals, wiping away the residue, and taking a longer highway drive so the oil reaches full operating temperature.

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