Although I wasn’t due for an oil change, I was anxious to try out a different oil, with the goal of reducing clutch drag. Ever since I’ve owned the bike, I have run BelRay EXL 20W50 mineral oil. I decided to try Shell Rotella T4, 15W40 (JASO, MA2). I dropped the sump plate and was pleased there was only dirty oil in there and no plastic or metal bits on the sump screen. Similarly, the pleated filter was just dirty and no extra bits were stuck to it.
After the change, I went for a spin and tried to work the clutch a lot to squeeze out the 20W50 and work in the 15W40. After riding it until the engine was hot, I tried shifting to neutral. I still can’t do it from a standstill but it “appeared” to be easier when rolling to a stop. I didn’t notice any significant increase in valve train noise as reported by others.
Much more riding is needed to see if the viscosity change has really benefited me, but so far the results are encouraging. The other good thing is the cost per oil change is lower and the 5L jug will take care of two changes for me.
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