My 92 Legend 3.2L ride dumped 2 qts of engine oil out the rad. expansion tank [see "oil in coolant" thread on this site].
Now, just discovered engine has lube oil cooler rite below the water pump. Has anybody experience with these coolers failing and letting oil into the coolant? I am considering pressure testing the cooling system, but dont want to force any water into the engine oil, so may just take the cooler off and inspect and test it. The oil never had indications of water in it, and hopefully i can get a local oil distributor to check a sample of the drained oil pan oil.:stupid:

 

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: