As for the fuel, my gut feel is that it makes sod all difference and thats certainly what the various motoring program trials of fuels have shown. But if it gives you peace of mind and the extra costs doent matter to you, then why not buy whatever magic juice you fancy.
Personally I stick the cheapest fuel I can find in the Fezza -. At 15 mpg on a good day, its vital! Press the accelerator and it sounds like a flushing toilet.
