Train Suggestions 3

Refuelling stations should not have to be manually added but the trains stop at one when there is one near their line. This is important since I have like 10 refuelling stations and manually adding them to every line is pain and I often forget one.
Station Groups do not work with refuelling stations either. As long as my number 6 is not implemented all the trains do not refuel along the way but only on set refuelling stations. This is inefficient.