Quote:
Originally Posted by caltexflanc
Rather than trying to out smart the engine and transmission manufacturers, I more or less just do what they say. Very nominal expense in the greater scheme of things especially given the criticality of the systems involved. And yes, I do oil analyses every change, including an interim on the transmissions, which leads to the "more or less" hedging within a very small variance.
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I do exactly what they say. Now I've never had the issue of the time for an oil change coming before the hours so not faced this circumstance. I know we're often times replacing perfectly good oil, but then I take pleasure in finding out how good it is upon analysis.
If it was a large commercial or military ship, I'd be different. I had a friend who never changed the oil in his car. Not seldom, but never. He based that decision after supposedly serving on a submarine where they never changed oil. I would say not comparable and certainly wouldn't recommend taking it to his level.
Saying a year probably evolved from seasonality. One advantage is that you change in the off season, so you don't have to in the middle of next year's boating season.