I have been told many different things from many different tecs. I was told to run synthetic in the motor and run standard in the trans and primary. Has anyone heard of problems running syn in tranny and primary?

 

I among many run synthetic in both. Just make sure that the stuff you stick in the primary is suitable for a wet clutch, and most are because most jap/euro bikes run clutch, gears and engine in the same compartment and share the same oil.

WB

 

You can run synthetic in the motor, I like Mobil 1 V Twin, It's not needed in the primary, good old HD primary oil works well there and you can run synthetic in the trans like Mobil 1- 75/90 or redline shockproof heavy.