It's surprising how many obstacles can be overcome simply by covering them with gas and setting them on fire.
The can of kerosene is a combat item used in West of Loathing. It is used to weaken enemies by reducing their muscle, mysticality, and moxie by 5 (cannot go below 1) and make them flammable. It can also be used to fuel the generator at Deepest Delve Mine.
How to acquire
Found in various crates of mining supplies.