Krastorio 2 splits off a separate fuel category, vehicle fuel: only K2 fuel,
biofuel and advanced fuel go into it, and only it is accepted by the car, the
tank, the K2 advanced tank and AAI vehicles. This mod merges that category
back into the vanilla chemical one:

• vehicles run on coal, solid fuel and rocket fuel again;
• K2 fuels burn in any burner that accepts chemical fuel, including buildings
  from other mods;
• K2 fuels keep their acceleration and top speed bonuses.

Prototypes are found by structure, not by name, so vehicles and burners of
other mods are covered without dedicated compatibility code. Without
Krastorio 2 installed the mod changes nothing.

Requires Factorio 2.1. Compatible with Space Age and K2 Spaced Out.

Credits

A from-scratch rewrite of K2-fuels
by UPD-8, released into the public domain under the Unlicense. No code of the
original is reused.

License

MIT for the code of this mod, see LICENSE.