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If your reffering to the motor oil (oil tank oil) then depending on your local climate, you would either run 10W-40, or 20W-50..

during the fall, or spring, when it`s say, less then 60F, you would probley want to run 10W-40....when it starts averaging 70F+, switch the the 20W-50..

this would be considering your working with a fairly tight motor..if it`s a high mileage motor, go ahead and run 20W-50 even in the fall and spring, and you may want to consider going to a striaght 50, or 60 during hot summer months..

Rev tech is very good oil, but something a little cheaper, which is what I usually run, is castrol GTX 20W-50...

the transmission, uses "primary" oil, as it shares the oil with the primary, which includes the clutches..so be sure to get actuall "primary" oil for the tranny/primary..other wise, you run the risk of slipping clutches...

hopes this helps..and for what its worth..i literally make a living out of working on bikes out of my home garage...

ride safe..

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