I run the Rotella T4 15w/40. Works fine.
I'd love to run the Supertech. Keep us posted patrickjohn.
When I was a kid, I ran whatever was on my dad's shelf. Never had a problem but I don't think a Yamaha 80 had enough gusto to spin a clutch, regardless of oil. ;-)
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"Light a fire for a man, and you heat him for a day. Light a man on fire, and you heat him for the rest of his life."
2007 Suzuki DRZ400S (SM convert)
2009 Q Link XP 200
1967 BSA B25 250cc Starfire
2022 Royal Enfield Interceptor 650
2023 Royal Enfield Scram 411
1948 Royal Enfield Model G 350
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