Yes but diesel is the real fuel
.... well I regret filling up with Tesco fuel 20 years ago for cheapness when there were no additives and it caused poor performance over a period. I wouldn't trust the additives in supermarket fuel not to wreck your pump long term [I know diesel talk]. As for performance when I was doing 120 miles a day the best ummff I got was when I used BP fuel and it use to shoot allong on my daily commute. I refuse to use BP fuel now due to the price difference.
If you are not bothered about getting supermarket points or spending £££ on groceries to get 2 p off etc at the supermarket and you don't live in the sticks you might as well use
http://www.petrolprices.com/ to strategically pick where you fill up on the journey that you are going to make and not use cheapo fuels. I always do. Cheapness moves around so you move with it as far as Esso, Shell, BP. The main oil companies sell at supermarket prices but you don't get your supermarket points, so why except poor performance 10p of points or whatever and the garage bill or spending £50+ on groceries to get additional pennies off. Sides the chavs fill up in Supermarkets
.
If Honest John says don't use supermarket fuel that's good enough for me.... should have taken the Telegraphs word for it 20 years ago when Tesco decided that additives were not important as my Fiat engine caked up. Poor handling seems to be down to these events and there again what do you get if you go for cheapness over quality. Notice how they have continued to sell their fuels and haven't accepted a
problem yet linked to their own business practices a re-run of the no additive line.