Originally Posted by timthorn
If you're all about the points, good plan. But, I tend to fill the tank when it's half full, first at Tesco then with Optimax. I used to fill only with supermarket petrol, but after filling with branded stuff by mistake I really noticed the difference in performance and economy.
Most of my friends who know their car stuff would agree that, unless you drive a specialist Asian car that's been designed to use 98+ octane fuel, the above statement is not valid. I suggest that you do a little test through consistent use of supermarket fuel one month and branded superunleaded the next. Record your mileage, keep the receipts and see whether it makes any difference.
I normally find the Morrisons loyalty scheme better than any other in the fuel market, as it gives you a straight 1.5ppl back.
If you're going through so much petrol, why haven't you already converted to LPG??? It'd pay back for itself in less than a year.