ive had really good luck with the synthetic kawi 15-40 or 15-50. i forget which one it is. i have tried the motul 15-50 and again, it works really well.
motulken said:It depends on who's oil you use. A few years ago Motorcycle manufactures went away from the API rating which were made for cars. Now the standard to look for is JASO MA. The Japanese manufactures have their own test, There are several components with one being a wet clutch friction test to make sure oils are not to slippery. On the back of a bottle that has been tested and passed you will find a box with MA and the approval number above it. If an oil passes this test you will not have clutch slippage problems. Motul make an oil called 3000, just petroleum, 5100 is a semi syn and E-Tech 100 is a full syn. All have passed the test and are rated JASO MA. So Motul's full Synthetic is no slipperier than our petroleum. Our top of the line is 300V, 100% Synthetic, it's what our factory teams use. It is not a JASO MA, it passes the friction test but we will not change the chemistry of the formula to meet the other JASO standards. It's a race formula for heavily modified race motors. We know it works because the Factory Moto GP teams as well as our Factory World Superbike teams help to develop these formulas
There is a new rating that came out this year and it's a JASO MA2. We have already been tested and passed on all three of the oils mentioned above. With packaging and labeling laws we cannot label both MA and MA2 on the same label. You will not see the box with MA2 until more bikes require it.
dirtyrider94 said:use 10w40