Very interesting and slightly worrying cautionary tale. I imagine that most classic car enthusiasts like us are aware of the dreaded ethanol issues but wonder how many motorists are blissfully unaware ???
Interestingly perhaps Chuffer I always use Super Unleaded in the Vette, ok so we can't get the Ethanol free anymore so it's 5% Ethanol of Tesco's best.
I generally leave two or three gallons at best in the Vette over the typical winter lay-off and on the basis that a spring fill-up of perhaps 7 or 8 gallons to mix with any 'old' and stale fuel remaining in the tank.
I'm wondering about the logic of that now (with the Ethanol content of Super Unleaded) given the very occasional pinking issue which I'm wondering now may have coincided with a previous 'mix' of old and new petrol.
This year I've totally drained the Vette fuel tank, mainly to top up the daily driver and this week to try out the new lawnmower (which appeared to run fine). Importantly I put the remaining 3 or 4 litres in the otherwise virtually empty 3 cylinder VW daily drivers fuel tank.
It was ok but when the 3 bangers tank was later filled fully with ordinary unleaded the running difference was really quite noticeable compared with the 'old' Super Unleaded.
Think I'll be draining-off the Vette gas tank over future winters.