I am currently running one on my boat (2.08-1). It was on the boat when I bought it over 3 years ago. I have put over 240 hours on it had no problem. I change the oil every 30 hours or so. It leaks a little around the rear seal, but not even enough to drip. There is a magnet in the drain plug and I check for signs of wear (chips or shards of metal gear teeth) and there is only a little metal dust (I guess this is normal wear). It does make alot of noise at low rpm and recently got a little louder, but when the oil gets up on the top gear it quiets down. I know these things have a limited lifespan, but I don't know how long. Classic used to sell them and they are the only one that I know of that knows anything at all about them and they sell a "special" gear oil for them. It is supposed to be thicker that regular gear oil. I don't know where to get parts or service for them.