Coal consumption on 0-6-0 switcher

[jockellis]

I'm building an HO gauge Atlas track plan switching layout and trying to figure out what kind of coal and water consumption a real 0-6-0 slopeback tendered switcher would have pulling and pushing usually one car around at a time and always on the go. This will give my engineers, hopefully my neighbors, something else to do on this layout which will be built by Boy Scouts working on their Railroading merit badges.
Jock Ellis