tab, not looking to start something mate, but the way I read the manual (or at least the piccie that Bain posted) was that you CAN use 91RON fuel? It said that, for all petrol vehicles, you should only use unleaded petrol (bolded, presumably to clarify that this is a 'definition') with a minimum octane rating of 91. Then it goes on to say that, for the XR6 Turbo only, premium unleaded petrol with a minimum octane rating of 95 is recommended (my emphasis) for maximum performance. And then the clincher (for me anyway), it says that the XR6T is also calibrated to run on unleaded petrol - I take this to mean that it CAN use 91RON fuel, even though it is not recommended. BTW, I only use 98RON, so this is a moot point for me anyway!!