Redex petrol treatment yes or no

On Sunday we were short of petrol and filled up with Morrisons over in Burton on the way back from Catton (great show btw). Backed up the drive at home and my wife said, phoorh is that the petrol? I said it wasn’t me so I guess it must be. Out again Mon and just the same. Damn and we’d filled the tank… That’s it now for me, a drop to get us home in future if we have to and stick to the branded stuff.