I was watching 5th Gear this morning, and they had a section on fuel. They tested 3 cars on 3 different fuels, which basically showed that the more powerful the engine, the more the fuel made a difference. The scooby made 15bhp more using optimax over supermarket fuel. So who here uses Optimax, and does it make a difference? I'm thinking about running my car exclusivly on Optimax, as I dont do many miles anymore, and could justify the extra cost.