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cnj, Haven't had that problem in any of my JD's -- knock wood. But I have had the problem in other engines. I think the best thing to hope for is a blown head gasket. You'd usually see a fair amount of white smoke out the exhaust with that, though, as water will usually escape into the combustion chamber as well. You might do a compression check and see if one cylinder is > -10% from the others to give you some direction to start on. Otherwise, you may have a cast part -- head or block -- that has cracked along an oil galley and is dumping oil into the water jacket. Check and see if you have water in the oil as well. A product called Bars Leak in the coolant might give you a band-aid type fix, but generally oil is under a lot more pressure than water, so any fix from a bottle or can won't do it. Nothing else comes to mind as an innocent -- meaning easy to fix -- place for oil to get into the water. I used to work on dry sump engines and used compressed air and a stethoscope type affair to listen for and locate leaks in the oil lines. If you try that, remember to crank the engine for 30 seconds to a minute before you let it have a spark, as it will be a dry engine. Here's hoping somebody else comes along an easier cure for that symptom. Steve
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