LOL, in WW2 the Japanese subs would run the oil in Burma from the oil well through a filter and into their tanks. I guess it had a shelf life measured in millions of years and still worked fine as a fuel. That's a quote from the Japanese captain of the I 15, the sub that sank the Indianapolis.
Ran my CB 350 for 100 miles on the oil that was changed in 1983, then changed it. Uses none and stays clean up to the several hundred miles I have accumulated.
Heck I have a hard enough time telling the oil I take out from the oil I use to replace it. It will cost me about $440 per 100K for oil changes. I call that cheap insurance.
regards
Mech
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