It also depends on how many miles you drive each time. It is a good idea to drive at least 20 miles or more and keep the oil temp around 210 to burn off any condensation in the oil. The worst scenario is to drive it for a few miles and shut it down. It would create more condensation each time.
I think you will be fine with M-1 oil & filter change every couple of years if you drive it enough to burn off the condensation in the oil.
Quote:
Originally Posted by Darwins Child
We'll put closer to 3000 km (well under 2000 miles) our summer-only vehicle here in our sometimes-seven-months-of-winter climate. That's why I'm interested in a perhaps 3-year oil-change interval rather than annual.
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