This Mod gives you the opportunity to producate High Octane Enriched Fuel Blocks in Angels Petrochem Universe. This is possible thanks to Fuel Additives, one already known, Toluene, and one new, Tetraethyllead.
This is whole chain:
Sodium + Lead Ingot = Sodium Lead Alloy
Hydrochloric acid + Ethylene = Chloroethane
Sodium Lead Alloy + Chloroethane + Steam = Slag + Tetraethyllead
Tetraethyllead + Toluene + Naphtha = High Octane Enriched Fuel