back at cha mate thanx i was wondering of i was gona lose some milage but if it stays the same or improve it's worth it ,and anyway 1 mile is 1mile mate, im geting 17 to 19mpg avg 50%city 50%highway,i use 16onz 2 cycle oil tc-w3 like some guys are using for lubricity conbined with power service grey bottle ,howes,redline ,amsoil,stanadine performance blue bottle they are great products go for the one easiest to find or cheepest