Re: Oil deposits in coolant expansion tank

[i6941tb@gnn.com]

Pablo Carselle wrote:
> 
> Dear Audinats:
> I hope what I fear is not right. I own an 875KTQ, 148K miles and was in
> the process to flush the cooling system and add Dex-cool antifreeze,
> when I discovered what appears to be oil deposits on the sides of the
> expansion tank. I stopped cold and began making some assumptions, most
> of which I hope  are wrong. So, here it goes.. car runs perfect boost
> 1.6 to 1.7 maybe more but I don't push it, all systems work etc....
> What is your diagnostic ???

Pablo, measure your compression before jumping to any conclusions. If
your 1st cylinder has a significantly lower compression, then yes, your
worst fears might materialize in a relatively near future. 

If not, AND you do not see any of the following:

1. Significant oil loss
2. Light brown oil foam on the oil filler cap and the dipstick
3. Significant coolant loss
4. A white misty cloud out of the exhaust pipe on a dry morning

then you can rest assured that the gasket will probably last a bit more.
Do not panic yet, check all of the above first.

Igor