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Old 06-21-2019, 09:57 AM   #2
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Join Date: Oct 2009
Location: Medina, Ohio (NEOHIO)
Posts: 9,693
Default Re: Briggs V-Twin Oil?

I run 15w40 Rotella in mine because it has some zinc and phosphorus in it. Modern car oils don't have these additives because it will damage catalytic converters. Straight HD30 would also have these additives in it, but I wouldn't run that oil in cold weather.

You can run any oil you wish. 5w30 is common. If you run an automotive oil, get an additive with zinc and phosphorus in it.
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