I am getting ready to change the final oil on my 03 RSV, I just turned over 21,000 miles and this will be the second time I have changed it. I would like to change it over to synthetic and am looking for a recommendation. The service manual calls for SAE 80 API GL-4 hypoid gear oil, I found an SAE 75W-90 API GL-5 that is made/sold by Super Tech. Has anyone used this type of oil in their bike?
Any feedback or suggestions would be helpful.
Thanks