I'm not familiar with the layout of the engine, but if you have any type of fractures between the oil galleys and the water galleys, its quite possible. You might also want to check out the factory service manual and see if there's any sorts of gaskets or anything that an oil galley and water galley would share (the thought being that if the gasket bad, one would leak to the other). If your engine oil and coolant shared the same radiator, like many automatic transmissions do, I would point to the radiator of course. Give everything a good once over and check it out. Good luck :thumbup: