Almost done...

[Young Gun]

Ok so I found the neutral switch and I am waiting on my new handlebars to get here to finish wiring everything up. I have been acquiring all of the fluids and things that I need to start her up and I wanted to be sure before I put in the transmission oil. The tech manual calls for S.A.E 10W-30. Would that just be regular motor oil or am I missing something?

[old smokey]

That sounds right, I have regular 10W30 oil in my GTR transmission.

[IAmTheSTIG]

I picked up some ROYAL PURPLE oil for recreational vehicles, upon looking at it closer it states that it is good for use in transmissions.

[OldSwartout]

The specification for Bridgestone transmissions is just regular engine oil.  Transmission fluid will work, we used it some back in the day.  However, with modern engine oils, be careful.  Don't use any engine oil that is for "high mileage", low friction, etc.  Many of these have friction modifiers that will make the typical motorcycle wet clutch slip (experience speaking).  The 350 clutch isn't affected of course, but the 175 clutch is.  In the "old" days, we used non-detergent engine oil since it had the fewest additives likely to screw up the clutch and the transmission didn't need the detergents to handle combustion byproducts.

[mcseitz]

Would you include synthetic motor oil on the list to avoid?

[buddy rawls]

typically,  I was thinking to use a "MA" rated oil (conventional or synthetic).  The MA rating is used for motorcycles with wet clutches.  When I replaced the fluid in my Sport 90, I used Lucas 10W-30 motorcycle oil.  If you do not want use a motor cycle oil, then definitely go with a conventional motor oil that does not have the sunburst or any huge list of late model this or that.  We're talking like 10W-30 basic Kendall, or racing oils.  even diesel oils may work.  I was under the impression that some of the diesel varieties even carried the "MA" rating.   Jusr, dont go for anything of the late model snake oil stuff.  It will not work well with the clutches.