Originally Posted by GreenMtnHunter
Yaowzaaa! ParExcellence, you are on to something here! I'm a snake oil skeptic, so I was not expecting the results I got... All I did was to drain the main tank, (3qts +plus a tad), and added 10w-40. Fired it up and less than two miles from the house, it was like I was on a different bike! So not all the tranny whine disappeared, but aside from slow speed throttle backs, it's gone. The shifting was smoother; the engine purred - chatter gone.... That's do til I go to the full 10w-40 at the 600 mile service.
You do know that the bike COMES with 10W40 Yamalube mineral, right? What I noted, was this...after I drained my original Yamalube 10W40, I went with their full synthetic 15W50. In doing that, I ended up with some tranny 'growl' when first taking off, or the tranny was revving low, but my throttle input was 'healthy'.
When I switched out to Royal Purple Max Cycle 10W40, all tranny noise vanished, and shifting the forks...was an easy up or down tap, or heel press (I have the heel and toe). Also, the top end, as well as the area around the cam's went very quiet. I'm sold on the brand and a full synthetic 10W40, and won't go beyond that weight. It has been almost 97 F over the last few days...and not one complaint from the engine...in difference of noise level, quality of idle...so that throws you need a 20W50, for hot weather running environments, out the window!
But truly, it all comes down to what makes the READER/RIDER, comfortable, pumping through the 113....