Oil cooler leaking antifreeze into the oil?

**mgjonesin** · 04-26-2011, 01:43 PM

I just got the results of a lab test of my oil.

They said "excessive antifreeze in the oil"

I'm thinking bad oil cooler!

Any one have any experience with this?

There is no milkiness and I did a block test for exhaust in the coolant (head gasket OK)

Thanks,

MGJones

**dmd** · 04-26-2011, 07:13 PM

Yes, that could be it, or a head gasket issue.

You dont have a footer with any engine type or year.. or even if it is a XC90..

**mgjonesin** · 04-27-2011, 07:26 AM

It's a 2003 XC-90 T6 with the cooler onthe back of the oil pan.

**mgjonesin** · 06-14-2011, 07:56 AM

Replaced oil cooler, no more problems.

**mgjonesin** · 12-12-2011, 07:57 AM

Cold weather is here and less than 10000 mi after replacing the oil cooler I have coolant in the oil again. The first oil change after the new cooler (5000 mi) the oil tests came back negative for antifreeze.