Quote:
Originally posted by RobertsStole2nd
Z - what about the comments from Moses and masraum
"I think it's an oil/water emulsion that will go back into solution when the car is fully hot. "
"It could also be condensation from the cold weather. Many 911 guys get this same thing this time of year, Drive the car until it's good and hot and then see if the stuff is still there or if it's boiled off."
could this cause the milk-shakey oil?
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The fact that you're loosing 1/2 quart of oil every 1000 miles leads me to believe your problem is more than just condensation.
Re: pressure testing the coolant system - good idea, but again, if the head is cracked, the pressure will be fine, 'cause the engine has to be very hot for the crack to open up.
Start with dropping the oil - see what it looks like. If it's milkshake - then check the seals around the oil cooler, and if those are fine, then pull the head - replace head gasket, check head for cracks.
BTW: Do you know if the motor has over-heated any time during it's lifetime?
- Z.