FM recommends non-synthetic for the primary when installing this clutch.
I presently use redline in all 3 holes. so looks like I'll be changing out the primary to something else.
what fluids have you had good results with using this clutch.
thanks

 

Formula+

 

Belray vtwin primary case oil.

 

with my aim clutch, i was using shell rotella t 15w-40. never had a lick of problem with it. actually still use it even though sold that bike long ago. it is jaso rated for wet clutch use, runs about $15 for a gallon jug, enough for 3+ primary changes (every 5k)

 

thanks guys....with the redline in the primary i have had zero issues finding neutral nor any unusual noises.
is this the case with your perspective recommendations.
thanks

 

This right here. I used to use Redline also before going to the 124" and the builder that did the install recommended BelRay. Been pretty happy with it to date.