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Or use Opti-Lube. One gallon of that will treat up to 512 gallons of diesel. I just bought a 5 gallon bucket for the club, with shipping it worked out to $54.49 a gallon. On a per gallon of diesel basis it's cheaper than motor oil or two stroke!

Which is why the farm tractors go so many hours between overhauls, 8,000 hours at 30 mph is 240,000 miles, 14,000 hours would be 420,000 miles, but those tractors rarely get revved over 2100 rpm, and the compression ratio is less than the multi-fuel.

The same engine block was used in the Oliver tractors, which went 8000-14000 hours between overhauls. Of course they were not multi-fuel, did not have as high a compression ratio, and were used most every day, but I doubt they got the rpm's up very high.