Bones
Registered user
I know high octane fuel such as Shell optimax has been discussed before but with the recent hike in petrol prices the posh stuff in my local Shell station is now 7p (about 5%) more expensive than regular fuel. The reason I now use it all the time is that the GS delivers 10-15% more MPG when running the premium fuel and so for me it works out cheaper. It also means that I can do two days return journey to works (230 miles) on a single tank. 


