Fuel Management connects everything that touches diesel and AdBlue in Central-Ops: where a fill is recorded, what it cost, and how much fuel a depot has on hand. It exists as one connected system rather than a pile of separate screens because the three questions depend on each other - a fill's cost depends on knowing whether it came from your own bowser or a vendor, and a bowser's stock figure depends on every fill and delivery being counted the same way.
After reading this article you will be able to:
Two things need to be set up before anything else in this article makes sense.
Navigate to the Workshop page, then select Depots under Configuration. Each depot records two independent things: whether maintenance is performed there, and whether it has a fuel bowser.

Workshop Depots page showing the Maintenance Performed and Has Fuel Bowser options
❕ Note: the first time you open this page, sites already known elsewhere in Central-Ops but never set up as a workshop depot may appear in the list for the first time, with Maintenance Performed set to No. Whether each is marked as having a bowser depends on your own sites.
Diesel and AdBlue are held as parts with a special Fuel part type. Navigate to Workshop → Parts then filter for the Fuel part type to see them. Fuel appears as its own part type wherever part types are shown or filtered, and each fuel part shows its Fuel Type, either Diesel or AdBlue, so it is clear which part is which.

The Manage Part page showing Part Type and Fuel Type

The Parts page filtered for the part type of Fuel
Fuel parts behave differently from ordinary parts, so that fuel is handled correctly and kept out of places it doesn't belong:
❕ Note: existing diesel and AdBlue parts that were nominated in Workshop Settings converted to the Fuel part type automatically. The Fuel Parts fields in Workshop → Settings have been removed, as they are no longer needed.
Having fuel parts has three consequences that reach forward into later sections of this article:
🧠 Learn more about setting up parts in general in Parts Overview & Management.