When E10 started appearing on forecourts I switched to using Super Unleaded (E5) in my petrol mower, not because of performance issues but because there’s a long off-season in Scotland when E10 left sitting in the mower or in the jerrycan might degrade and cause me problems next year.
But jings and crivvens, my old mower revved like something out of F1 the first time I put Super in it
