Invaluable when used with a performance car
Pricier ... but that's why I use AA petrol watch!
Increased performance(esp mid range) and economy, ...
Cost 89.9p per litre eye-wateringly expensive (at ...
Shell get much richer !!!!
I get much poorer !!!
Gives more power, smoother drive.
Price premium, availability.
Higher performance, cleans fuel system as you driv...
None if you dont mind paying a little extra
Will make a marked improvement on your car.
Won't happen overnight. More expensive.
Cleaner full better for car
Fuel Economy, Overall Engine Performance
Estra Cost over standard unleaded
Increased MPG, better economy, improved performanc...
None that come to mind
smoother engine & more power for some
..but not all, cost.
Better fuel economy, increased performance, longer...
The PRICE! the fact that there aren't shell garag...
High Octane, Cleans Engine & Injection
Nothing, you get what you pay for
SMOOTHER RUNNING AND PERFORMANCE