just had my 16,000klm service done on my fatboy, always use synthetic in all 3 holes, the good people where i get the services done now use Spectro Platinum 6-speed Transmission Oil for gearboxes on 6 speed bikes,

and  so far i'm very impressed with this stuff ,   noticeably less "clunk" when changing gears , even from cold and much smoother through the gear changes, i could feel the difference after only a few Ks travelled 

anybody else use/used it ?  what did ya reckon ? 

I change over to Spectro Platinum 6 speed and didn't notice much difference at first but after a few rides gear change became alot smoother.
Finding neutral is a breeze and slips in nicely.