maybe that is why he burned out the piston no 2 stoke in fuel or no tank on it for it to inject from little tank ,it does hold about 1 1/2 qt of reg oil in crankcae , I thought 2 strokes used no oil this way unlesss it is for the clutch and this should take clutch oil right .what kind , he had reg motor oil in it , give me some insight ,I must get a book on this thing .and what is the fuel oil ratio mix for this ,thanks for the responses ,I am getting the bore done as we speak should be done by monday , what is the going price to get the bored out , roughly this guy is charging me $65 that sounds a little sttep for that .another question how hard is it to put a new sleeve in it ( change it) ,a new one cost about $85 on ebay