Sup fellas i recently bought a lifan zxtdr150cc oil cooled motor and i have a couple questions aboot it. The first being an oil cooler. It did not come with one so i ask is it absolutely required that i have one or does the oil pump do a sufficient job at circulating\cooling the engine by itself? Second....where would be the more ideal spot to install one if i do infact need one? The ports on the crank case or should i install it on the piston head? Can i get crazy and come up with a way to incorporate both of them? Any info would be greatly appreciated