ProInvaluable when used with a performance car
ContraPricier ... but that's why I use AA petrol watch!
ProIncreased performance(esp mid range) and economy, ...
ContraCost 89.9p per litre eye-wateringly expensive (at ...
ProShell get much richer !!!!
ContraI get much poorer !!!
ProGives more power, smoother drive.
ContraPrice premium, availability.
ProHigher performance, cleans fuel system as you driv...
ContraNone if you dont mind paying a little extra
ProWill make a marked improvement on your car.
ContraWon't happen overnight. More expensive.
ProCleaner full better for car
ProFuel Economy, Overall Engine Performance
ContraEstra Cost over standard unleaded
ProIncreased MPG, better economy, improved performanc...
ContraNone that come to mind
Prosmoother engine & more power for some
Contra..but not all, cost.
ProBetter fuel economy, increased performance, longer...
ContraThe PRICE! the fact that there aren't shell garag...
ProHigh Octane, Cleans Engine & Injection
ContraNothing, you get what you pay for
ProSMOOTHER RUNNING AND PERFORMANCE