Car oils are not designed with the high power density of modern motorcycles in mind. Neither are they tested to be compatible for use with wet clutches and highly loaded gears that you find in modern motorcycles.
The oil filter works to trap foreign particles and debris introduced into the oil by normal riding. These particles can lead to engine damage, while a blocked filter may lead to oil starvation and ultimately engine failure.
Yes, by reducing internal friction and drag the oil can improve engine efficiency and therefore enhance engine performance. In most cases this is achieved through the use of low viscosity, friction optimised oils.
Yes, with the use of high performance base oils, in multi-grade engine oils, we can ensure that the oil flows when cold and will not evaporate or burn away when subjected to high temperature operation.