Thanks @kezo I’ve just watched both videos and, being thick when it comes to technical issues, I didn’t really follow it all.
On his leaderboard he has Shell V-Power first and Tesco Momentum second, but the former had 2.5% ethanol, whereas Momentum had 4% which he implied was poor, but I’ve no idea what that all means.
With the X5 variant I am getting, BMW recommend Shell V Power as it’s a high performance engine, but you can use any super unleaded and in fact regular unleaded, whilst not necessarily recommended, can apparently be used without causing any problems (and the BMW dealer just use that on all their high performance cars). I don’t need to worry about maximising performance, as the car has more than plenty of it, but as it’s heavy on fuel I might get some of the fuel cost premium back in better mpg according to owners.
The 3 choices that I have for petrol, which I could mix and match, are (using last weeks prices);
Shell V-Power £1.499 per litre
Tesco Momentum £1.389 per litre
Esso E10 regular unleaded £1.309 per litre (this is in my village – the garage doesn’t sell Esso Super Unleaded)
I am thinking of using Shell V-Power for the run in period, then Tesco Momentum thereafter, with every 4th refuel using Shell V-Power, but having the regular Esso unleaded as a fall back in an emergency. Given what BMW recommend for the engine, the cost differences above and what the chap on the videos discovered, does this sound sensible to you, or would I be wasting money? Thanks in advance.