hi,, i see your in aust. as i am,,, a few years ago in orbost.. i had a stuffed 1980 gs1000e,, it rattled and groaned and when it ran you could not stay in the garage the was just smoke all over the garage ... so i went to supercheap and purchased 4lt. of shell sx4 ....its actually 20-50 fortified synthetic ,5mins after using it ...no smoke and the old guy that was in my shed ... why don,t you go and get a rwc.. now ...i said it will not make it up the road and back.. so now all i ever use on both my road bikes is shell sx4 and being fortified synth. if you are caught somewhere you can always top up with mineral without killing the motor... hope this helps you regards oldbiker