Shell V-Power is the best road fuel on sale in the UK, FACT!
Not only is it now rated at 99RON, shell are renouned for under selling their products, because the 98RON Optimax, as told by a Petrolchemical Engineer from Shell, was never sent into the tankers below 98.9RON!
I've yet to see him regarding the badged 99RON Gear, but if anything like the past happens, it'll be 100RON Juice!
Shell FTW
Another arguement for Shell, is that Tesco 99 Dogpiss, is actually 95RON base fuel, made up to 99 with junk.
Shell also has a small amount of injector cleaner, and oil in it, to stop corrosion of fuel line components, hence the famous V-Power smell, when something comes past running on it!