Hi all, Has anyone ever heard of an oil cooler going bad on a mercruiser allowing water to get into the oil ? I just bought a boat today, 454 mercruiser, the owner said he went to use it last year and it would not turn over. Found that water had gotten into the oil and drained about 17 quarts of water/oil from the engine. He pulled the engine out and had it checked out at a race engine shop, they said it looked like new inside, they put it on a test stand, runs great, holds pressure in the cooling system. They seem to think that the oil cooler cracked inside. It looks like a tube that water, engine oil, and power steering lines run through, presumably to cool the oil and ps fluid. Anyone think that is likely ? The owner seems to be a great guy, I believe him and even told him I would pay the same amount even if he told me the engine was bad, as it would save me the hassle of putting it all back together only to find more problems. Is it neccesary to buy a new cooler, or can I just connect the respective hoses ?