Curious rising oil level

eddielisenbey · Mar 29, 2009

I have noticed the last two times I changed my oil it seemed to be a quart higher than when I filled it. I also noted that despite the lack of a leak I have had to fill the coolant resivoir twice as well. My hypothesis is that there is a communication between the coolant and oil that is allowing coolant into the oil system. Has anyone had this same thing happen to them? Any ideas of where to start? Any help would be appreciated.

Thanks.

whitedog · Mar 29, 2009

Does your car have an oil cooler? I'm going to guess that it does since you are on a TDI site, but we don't know anything about this car that you are asking about.

Year? Mileage?

whitedog · Mar 29, 2009

http://forums.tdiclub.com/showthread.php?t=219845

Apparently it's a 2000 Golf TDI?

dieseldorf · Mar 29, 2009

Eddie: UOA

eddielisenbey · Mar 29, 2009

Sorry about that. Yes it is a 2000 VW Golf TDI.

eddielisenbey · Mar 29, 2009

Approaching 200,000 miles. Still starts easy and runs strong with no issues. Economy still good as well.

JB05 · Mar 29, 2009

We suspect the oil cooler is leaking coolant into the oil. The cooler is located under the oil filter housing with two coolant hoses attached.
Some refer to it as a heat exchanger and is under the oil filter housing.
At least that is how my 05 Golf is set up.

eddielisenbey · Mar 29, 2009

Thank you. Sounds like that would be the place to start.

thebigarniedog · Mar 29, 2009

eddielisenbey said:
I have noticed the last two times I changed my oil it seemed to be a quart higher than when I filled it. I also noted that despite the lack of a leak I have had to fill the coolant resivoir twice as well. My hypothesis is that there is a communication between the coolant and oil that is allowing coolant into the oil system. Has anyone had this same thing happen to them? Any ideas of where to start? Any help would be appreciated.

Thanks.

Any WVO or VO usage?

eddielisenbey · Mar 29, 2009

thebigarniedog said:
Any WVO or VO usage?

Yes i have.

whitedog · Mar 29, 2009

Ungood. That throws in a huge variable that you failed to mention that just throws out all previous gusses.

Big Dog, thanks for asking the question.

Is the rising oil level from the WVO? Is the low coolant level from a leak? Go back to what DD said and get an oil analysis done to find out if you have coolant in you oil of WVO.

eddielisenbey · Mar 29, 2009

I was concerned about that as well. I stopped using VO and the problem persisted. How to you get oil analysis done? There are no leaking fluids while the car is still in my garage. I suppose fluid could leak while going down the road though.

whitedog · Mar 29, 2009

Go to the Blackstone website and order a kit.

dieseldorf · Mar 29, 2009

...another one bites the dust....

thebigarniedog said:
Any WVO or VO usage?

eddielisenbey said:

Yes i have.

Click to expand...

Ahhhh. So now the truth comes out.

Cylinder leak down + compression check

dariod · Mar 29, 2009

Put that thing on ebay because that is where most of TDI's that have been on WVO end up.

Drivbiwire · Mar 29, 2009

Car is trashed, keep on driving it until it has to be towed to a junk yard.

DB

dieseldorf · Mar 30, 2009

Rescue mission transitioning to a salvage operation.

vwcampin · Mar 30, 2009

So you have used WVO. Did you have a kit installed, if so what kind? Or were you putting it in the main tank? How many miles did you run WVO? What were your oil change intervals?

TDICADDGUY · Mar 30, 2009

Drivbiwire said:
Car is trashed, keep on driving it until it has to be towed to a junk yard.

DB

Agree with DBW...damage is done. See how long you can limp the ol' greasy girl along. If I were you, go buy some Rotella or other cheaper oil and keep changing it every 3-5k to keep the wear to a minimum.

If the rest of the car is in decent shape, keep your eyes open for a used engine. If you have a grease kit, sell it to some other poor unsuspecting schlub to help finance your repairs. If you don't have a kit...what did you expect would happen from running grease?

Good luck...hopefully you saved about $3000+ from running veggie instead of D2.

Ski in NC · Mar 30, 2009

Geez, guys. OP has a car that starts well, runs well, and only complaint is loss of coolant and rising oil level. Does not seem trashed fatally yet.

If coolant is going in oil, the underside of the oil fill cap usually has "milkshake" on it. Emulsified coolant and oil. If bottom of cap is just oily and black, coolant is probably not going in oil. A sample would tell for sure.

Rising oil level on wvo means wvo is probably condensing on cylinder walls and mixing with lube.

Quit running wvo, and do a few quick oil changes (do one now, then one in 500 miles, then one in maybe 2000 miles), and monitor it.

TDICADDGUY · Mar 30, 2009

Come to think of it, it is likely the VO that is raising the oil level. Rings are probably sticking. Coolant in the oil should be very noticeable, it gets milky beyond just the oil cap.

There is probably a coolant leak somewhere else. EGR cooler, water pump, metal coolant pipe o-ring, CTS o-ring, coolant flange are all likely sources.

Get a UOA to see what is in there. Then change the oil, check compression and quit running VO.

Curious rising oil level

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