Thanks for the report. I've logged this under #202.
@Slendynone of the vehicles on the server will have realistic tank capacity, so to ensure you're not stopping every few minutes to refuel and adding a bit of balance to it all.
Thank you for your help in alerting us to this bug, now that all of the required information has been gathered, it's been logged with the development team who will look to fix this.
Thread locked, awaiting development team response
Excellent news! This has now been fixed by the development team and will be released in a future server update.
Thanks for doing your bit to help us keep the servers bug free!