Could somebody please enlighten me on what the difference between motorcycle two-stroke oil versus outboard oil's requirements might be? I wasn't sure if it had to do with the engine cooling methods, because I know you get both air and water cooled two-stroke motorcycle engines. Some help on...
Why do American engines require a certain sulphated ash rating is it because of the design of the top ring? Why do European engines require a low ash rating? European top ring position is lower on the piston than American pistons. Heat dissapation I know also plays a major role in terms of where...
