I’m not sure about a boat engine, because marine service is generally more subject to problems from bad fuel, overheating, filters that don’t get changed regularly, long periods of none use, being operated too cold or at too low an RPM (resulting in carbon buildup) and so on.
In the fork lift truck business, we used to figure an hour of engine operation was roughly equivalent to 35 miles in a car. Diesel engines in fork trucks have an average life expectancy of 12-15,000 hours. I’m told that in larger power boats you can expect something like 6-8,000, which would seem to indicate boat engines are twice as likely to have problems or maybe just wear out. My M35B calls for replacing the oil filter every 100 hours of engine operation. I change oil and filter in my car at 3500 miles. Which would tend to suggest that 35miles/hour would be about equivalent. As with anything else, YMMV. Rick Brass Washington, NC From: Bill Coleman [mailto:colt...@gmail.com] Sent: Wednesday, October 14, 2020 3:18 PM To: 'Stus-List' <cnc-list@cnc-list.com> Subject: Stus-List Engine Hours Rick, you seem like a good person to ask this question, Is there a good way to estimate what the equivalent Hours, like say 2,500 engine hours on a boat, would translate to in Miles, (odometer reading) to guesstimate life span? Bill Coleman Entrada, Erie, PA
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