I'm gonna guess they don't take individual locomotive model fuel consumption rates into account. And to be honest, we have no reason to refuel in this sim unless a scenario is written to require it. These engines with a full tank will easily go from end to end on even the longest routes. Maybe if you were in free roam and went back and forth over an entire route many times by continuing and saving the same session over time without a refuel. THEN you might run out of fuel.
These are some older, real world locomotive consumption rates.....
FACT:
A coal train moving uphill at 11mph with 4 SD40-2 locos on the point and a 2 loco helper shoving on the rear has a fuel efficiency of about 48 feet per gallon. http://www.alkrug.vcn.com/rrfacts/fueluse.htmAnd SD40 Horsepower & Efficiency by Throttle Position.....http://www.alkrug.vcn.com/rrfacts/fuelSD40.htmJust to give you an idea of how long these locomotives can run on a full tank of fuel. I took an SD40-2 with it's largest fuel tank option ....4,000 U.S. gallons. In run 8 (full throttle) it consumes 167.7 gallons per hour. It would take the locomotive almost 24hrs (23.85 hours) at full throttle before it ran out of fuel.
