Hi there, this will depend on where the failure is. Remember the oil system on the pressure side is higher than the coolant pressure, so fluid will only pass on way. You may have a crack in a head near a high pressure gallery, or near the transfer gallery port at the head gasket. If the oil in the water is severe, you will have to do some digging as the external leak will have no bearing on the issue. If you have an engine oil cooler in the radiator there may be a leak there.
Sunday, December 30th, 2007 AT 4:24 PM