I agree with the use of motorcycle oil in bikes or whatever that have a common transmission and engine lubrication, but with a “CVT “ constant velocity transmission, it is a dry clutch system and only grease on the bearing areas is generally required. Motorcycle oil is much like non-detergent oil that we used to use to break in new engines. The advantage of using automotive oil if possible would be the greater detergents in it to help clean the engine and keep contaminants in suspension. A Teryx does not spin at high RPM, but is more of a low RPM torque engine.