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Volkswagen Jetta, Golf, GTI: 1993-1999, Cabrio 1995-2002 (A3) '97 Jetta with some water in the oil.


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Last Post: Jan 19, 2013 12:13 PM Last Post By: tcovenant2000
tcovenant2000

Posts: 1,802
Registered: 12/09/03
'97 Jetta with some water in the oil.
Posted: Jan 18, 2013 6:59 PM
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My son has a '97 Jetta. There's milky stuff on the oil fill cap and also a tad on the end of the dipstick. Water, I assume. We've done a number of checks. The car doesn't get hot. (Thermostat is missing or stuck open, so never really gets even to temp, but that's another issue). No white smoke. Compression is good. Really no indication at all that there is a head gasket problem. Where else could this be coming from? I seem to recall that the heat exchanger for the oil (where the oil filter is located) could cause this. How does one test that?

Thanks!

Thomas
FKH161

Posts: 7,661
Registered: 12/29/05
Re: '97 Jetta with some water in the oil.
Posted: Jan 19, 2013 1:59 AM   in response to: tcovenant2000 in response to: tcovenant2000
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Start with changing the thermostat... a hot engine will get rid of condensation better.

Make sure the engine is sealed well... smoke it for leaks in the pcv system.

Oil cooler can be pressure tested:

http://www.youtube.com/watch?v=WNYx4Xjr8-I

When the cooler goes bad, you'll know it!

http://www.youtube.com/watch?v=5sjFlwvXXus

Odds are, it just needs a thermostat and some longer driving cycles if it is just short trips.
tcovenant2000

Posts: 1,802
Registered: 12/09/03
Re: '97 Jetta with some water in the oil.
Posted: Jan 19, 2013 12:13 PM   in response to: FKH161 in response to: FKH161
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That's sort of what I was hoping for. It seemed like a lot of condensation but with the thermostat being missing or open likely that's it. I'll try and let you know how it goes.
Thomas

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