Super-unleaded or unleaded?

[richrack]

I drive a 987.2 Boxster S, and when I picked up the car, the Porsche dealer told me I just need regular unleaded petrol. I asked about Super-unleaded, and he said that only turbo-engined Porsches need super. For my kind of mostly "sensible" driving, unleaded seems fine - I mostly use Shell. I have occasionally tried super (Shell V-Power), but for day-to-day driving could not feel any difference, or notice any difference in fuel consumption. Maybe I'm not driving fast enough to tell!

I intend to keep the car for a long time, so want to make sure its the right choice. Any views on choosing between unleaded and super?

[richrack]

Thanks to all for the feedback. I'm tempted to keep to Super from now on.

The Drivers Manual says "The engine is designed to provide optimum performance and fuel consumption if unleaded fuel with 98 RON is used. If unleaded premium fuels with octane numbers of at least 95 RON are used, the engine's knock control automatically adapts the ignition timing."

So I suppose that the dealer is right, as the car can be driven on 95 RON fuel, although it won't produce "optimum performance". Acceleration is also subjective - the car will always feed a lot quicker down a narrow country lane than on a motorway! So I guess what I was asking - can anyone really feel the difference in performance in day-to-day driving, or notice any difference in fuel consumption?