and never had problems ,and depends where you live
Weight means: Winter starting @ 5w30: flows easier in the cold. Summer, you can thicken the oil during summer with a 20w50 for example.
Racing means: 0w30 is about the thinnest, parts spin thru it easier, less friction, better gas mileage. More noise at the top end where on the can it says, 'it takes a man' to enjoy that engine speak.
Clutch slip means: Convert to a dry clutch. Or, 'takes a man' to wait for the syn to breakdown if you want to gas it up no slip.
Takes a Man's oil: To understand all that racing heat and do you see engines breakdown caused by 0w oil? No. So extra miles, a tiny bit of noise, who cares about the weather is zero out the weight.
You'll get a thousand different answers on what to use.....
No chit :2thumbs:
If we were heads up, rally round the mileage loop, who do you think is going to win the argument is 0w summer/win and you following the thermometer?

WOTook ya? I'm already off the bike. One 0w after the other in 3 locations. And for those with the clutch slip, 1/2 ATF and 1/2 0w.
JMO is one more oily thread to slap your skirts, crunch your gears, slip your plates, you don't get it, not my crankcase we make a case or buy a case of 0.
Did you run that runner up weight? :roll: No wonder you face look all :angry:, haole!
Signed,
NOLTT