Cheers Roelof - I am a little upset that my LHS actually sold me the 17% oil containing fuel after telling them I was going to run in my Nova buggy engine - once I arrived at the track the folks there stopped me immediately after I ran a single tank and explained the oil situation. Makes total sense that high oil is for plane and heli considering the throttle is always open and thus the oil is expelled...obviously not the case for buggy - my fault for not looking into it deep enough but still...LHS should know better