Oil in Coolant, but no Coolant in Oil

[mdex]

So my oil cooler let go....filled the cooling system with oil. It was caught quickly and the car was shut down without overheating.

The cooler is changed, all rubber hoses changed, new rads etc etc.... car has been flushed over and over again yet we are still getting significant amounts of oil into the reservoir. When diagnosing the problem originally we checked for head gaskets, cracked heads etc and everything was good. Not sure where the oil could be coming from, any ideas?

[san rensho]

I guess I would check to make sure the new oil cooler isn't leaking if you have conclusively ruled out the heads and head gaskets.

[tonycarreon]

from another thread, pretty much a carbon copy of what you're saying...

http://986forum.com/forums/general-discussions/29656-coolant-supposed-thick-gold.html

Originally Posted by slogans7

Took it to my mechanic and here's what happened.

1. The oil cooler (which apparently sits on top of the engine) had an internal leak. Since the pressure is higher than that of the coolant, the oil leaked into the cooling system, producing the sludge. They had to flush out the cooling system four times to get the stuff out.

2. The threads on the coolant expansion tank, being plastic, had just worn out. So even with the new cap I had bought, the coolant leaked out the top.

Looks like the bill will be about $2000. Bad, but not as bad as a blown head gasket or other serious problem.

[mdex]

And now on further inspection the mechanic feels that I have either a cracked head or headgasket going..... It may be time to bite the bullet and build a 3.6

[madmodz]

I would check the new oil cooler. They sometimes leak. It happened to me. Don't let the mechanic scam u with a blown gasket if u dont need it.