is hard to jet for avgas? There are practically zero ethanol free options here in Ireland, and soon to be a minimum of 10% ethanol. I was told by a classic car friend of mine that most people use these https://millersoilsireland.ie/product/tetra-boost-e-guard-15/. So the only options i have now are
https://millersoilsireland.ie/product/vspe-power-plus-treats-500ltrs/

1: VP Race fuels
2: Avgas
3: Standard pump petrol with that Tetra Boost.

How it turns the fuel into leaded fuel I don't know. sounds like snake oil tbh but I'm gonna do a little research on them now.