I first need to know where the oil and water are mixing. Is this in the crank case or in the cooling system?
If it's in the crank case, you have a blown intake/head gasket. If it's in the cooling system, and you don't have a oil cooler, then that is transmission fluid, not oil mixing with the coolant.
This will happen when a crack develops inside the radiator (the radiator has a built-in tranny cooler as well).
You'll have to replace that.
Tuesday, September 21st, 2010 AT 10:32 AM