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post #11 of 15 Old 01-26-2007
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I agree with kvsk that an oil analysis can be skewed by a recent oil change. You can tell a little about bearing condition by oil presure readings. You can maybe tell about ring condition by compression testing but low compression may be the result of valves. My engine has 120 hours and smokes upon startup till it warms up. These diesels are a little harder to diagnose than gasoline engines.
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post #12 of 15 Old 01-26-2007
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Depending upon how thorough you wanted to be, you could check compression, injectors, fuel and lift pumps, inspect cooling systems incl intercooler if a turbo, valve seats, etc... If unfamiliar with marine diesels, it would be best for you to find an experienced marine diesel mechanic.The point I tried to make is that an oil analysis, in and of itself as a one-time indicator, is meaningless
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post #13 of 15 Old 01-27-2007
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"2. 2700 hours works out to over 200 hours per season for 12 years use and is quite a lot in an auxiliary sailboat, probably indicates a southern boat."

Not sure I follow. My boat is 32 years old with the original engine, has less than 2,100 hours on it, and has always been a southern boat.
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post #14 of 15 Old 01-27-2007
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Seabreeze...He is referring to the benefits of a 9-12 month season vs. a 3-6 month season typically adding more engine hours use per year to a southern vs. a northern boat. Of course...if you sail into your mooring the general rule won't hold true!
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post #15 of 15 Old 01-27-2007
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In the south, you can pretty much sail the entire year. Up here in New England, we get a few months. With equal usage, a southern boat owner has the opportunity to run up more engine hours per year.

A great deal depends on the usage style of an owner; some are motor sailors, and some are sail sailors.

OK Cam, you beat me to it!
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