Queasyrider
New member
Thanks Drew! It's been a while since I read up on it, but I remember that the low number (20)indicates the equivelent viscosity of 20w at 0 dg. F, the high number (50) is the same as 50w at 212 deg F (Or something like that!). Anyway, I feel the same that clean oil was a better choice, even if a little thicker.............ArtDon't sweat running that 20/50. Aprilia has been running the same v twin in most of their bikes for years and a lot of those guys run 20/50. No oil issues.
BRP specs the 5/40 oil because it's the same oil they use in a lot of their other machines.
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