*spoiler warning*
i died while i was bringing back the Firetank fuel things, to a hog. When i reloaded, both of the fuel tanks were at -1.0 fuel. Trying to use them set the gas can to -1.0 aswell, and it registered as empty.
Also, Kerf-O looks at you while doing the pat/fixing animations which makes it look weird, probably the same for other animations