During my last voyage my port engine died repeatedly. We changed the oil and found large clumps. My engine is situated so that I must pump out the oil to change it. I guess I could drain it into the bilge and just clean it up, but that seems like a hassle. My boat is about a week's sail from a reliable mechanic, who recommends that I don't run it until he can service it. As it's difficult to dock with just one of 2 engines operational, I'd prefer to try another oil change and get it running first thing. I have no clue what he will do other than change the oil again and somehow assure all the clots are out. Seems I could accomplish this, but due to my diesel-engine ignorance, I am concerned running the engine again w/out professional service could damage it. If anyone has any informed advice for me on this predicament, I would greatly appreciate it! Thanks, Sue