Hey all, I've got a DT175 and was just wondering if its possible, and if so what effect using premium unleaded and the more expensive synthetic oils has. I have no idea about this, its a two stroke with seperate oil/fuel tanks (i.e. filled with straight unleaded fuel, not two stroke mix), so is it even possible to use premium unleaded or do you have to stick to regular? I ask as its dirt cheap to run so if it is of any benefit running premium stuff, i.e. burns less smokey or whatever, I'm happy to pay the little extra but don't know if it does make a difference. Does anyone have any information on this, and what do you do regarding switching from regular petrol/oil to premium? Is it necessary to completely drain the bike and then switch or is mixing possible and then moving on to premium? Cheers.