the TCW3 oils are also Phosphorus and Phosphate free so we don't polite the waterways, this is also one of the primary reasons 2 strokes are being banned at many lakes. It is ecologically irresponsible to try to convince everyone here to use otherwise. Heck, why don't we start pouring our used automotive oil down the sewer again like dad did!
Motorcycle oils usually have Ester additives which attract moisture, then as the vehicle is parked the solvents evaporate leaving the moisture behind which is seen as a thin coating on the bearings and cylinder walls, bearings hate moisture and fail prematurely because of it.
Klotz and many other brands have higher performance oils for racing only applications, but will direct you away towards their other oils for these reasons