ok guys, as a tunner will tell you if your car is set up to run on unleaded then thats what you should put in, if your cars been chipped and set up to run on super unleaded then thats what you should put in ..common sense realy mine was set up for super and says it on the paper work from m.s.d at the bottom of the receipt, thers no point in putting optimax or any other super if your cars set up for unleaded

andy