Maybe not a winner, @AThirtyFive, but can’t argue with your proof or dedication to the cause. I remember my father telling me to never let my petrol level get too low otherwise I’d be cursing over residue blocking up my carburettor. Urban myth or resolved by technological advances? I don’t know. All I do know is that I can’t bring myself to let the tank fall below a quarter full. Hats off to you bravehearts.