I have said before, I have run umpteen cars on supermarket fuel and never put a drop of Redex in any of them, and never had the least bother. I have had cars that ran 5 miles to and from work every day and others that did 80 miles, mainly motorway, to and from work every day. I have sold cars on with 200,000 miles plus on the clock and never had engine problems. Now if V-Power and Redex stopped them rusting, then I would be interested.