If you're talking about Pre 0.17.60 Oil, I was the one who made the tiny change necessary to make that work on 0.18. FuryOfStars explicitly said he (presumably) didn't play the game anymore. I'm not interested in this mod, so someone else who knows how to mess with Factorio mods should offer to take over.
I could do it and probably will fix it when it breaks but not sure i can devote enough time to take it on full time. My entire weekend was spent fixing my mods on another game after an update broke them.
I just wrote a mod Steam Trains based on the code from this one. By doing that i was forced to (more or less) understand the complete implementation of this mod. It would be easy for me to port it to 0.18, maybe reduce the download size a bit and so on.
As I will support my mod for the forseeable future and these 2 mods share much of their code, it would be a minor effort for me to also support this one. In fact it could be beneficial for both if they could use a common code base (Steam Trains needed some functionality this mod does not provide, so i had to basically fork it completely).
FYI: I just released my 0.18 version of this mod. Besides being a fix/migration for 0.18 it adds a few new things:
- locomotives can now also use barrels for fuel
- locomotives can now be fueled at stations with multiple pumps with different fluids. this allows the creation of global refueling stations offering all supported fluids.