I have 2004 Dodge Intrepid 3.5L with 153K miles. For the past tow months I am getting oil in the radiator but NO antifreeze in the oil. Oil level gets low but the transmission fluid is fine. No coolent smoke, No Oil smoke, Have been draining coolant, Passed emission 3-months ago, Gas mileage is fine @ 23MPG. I have to add about quart a month (1000?-miles). I have been using Mobile-1 synthetic since bought the car at 108K. Currently 153K miles on the engine. Two years ago water pump and timing belt was replaced.
If it is the head gasket then why oil is fine and no coolant in the oil. It is Not transmission Fluid either.