Let's talk about Oils...
First and foremost everyone who has a motorcycle with a "wet" clutch should ONLY be using a motorcycle oil designed for wet clutches, NOT and I repeat, NOT an automotive oil. Let me explain; back in the day, now we are talking 70's and 80's here, all of the oils were basically the same, but sometime in the late 90's the Automotive industry wanted more efficient and slippery oils. How did the oil manufactures do this, by more additives, chemicals that keep the molecules from sheering and chemicals that make the viscosity spread greater: we used to use 10w40 now we have oils that are 5w50, so to get this viscosity spread, more chemicals are added. The oils today for cars and trucks are way more efficient than oils back in the day, but they are not good for the clutch, not because of the "slipperiness" of the oils but the extra additives, these attack the material of the clutch plates, breaking them down and causing premature clutch wear. I have worked in the auto parts business for 18 years and had to know my oils. I had bikers and car guys wanting the right and best stuff for their babies, so I have talked with various oil manufactures on this (Valvoline, Mobil, Lucas, Royal Purple). I don't care what kind of oil you use, conventional or synthetic or the brand, you just need to use the right "type". It's your baby, give her the right stuff.
