Another OIL question
I read through the other posts, and have been considering the Rotella full synthetic 5w40. I mentioned this to a guy at my local yamaha parts shop, and he cursed me up and down and said I would be replacing the clutch every 3 months because there is no additive for the wet clutch system. He claims that you CANNOT get away with using anything that isnt branded for motorcycle use with the MA symbol on the back or it will mess with your clutch. Was he just trying to sell me a gallon of oil?
Another parts guy I have known for years (and I trust) told me a few years back that full synthetic can sometimes cause the clutch to slip because it is TOO SLICK of an oil.... Great for cars, bad for bikes.
My bike only has 2500 miles on it, and I want to start using a great oil. I can buy the gallon of non-syn Yamalube for cheaper than the gallon of full-syn Rotella
What have you guys who use Rotella, Mobil, or other car&truck oils found? Do you notice any difference in clutch operation? Any better or worse results since the switch, and who has the most miles on their bike that uses non motorcycle branded oil?