How to Get Oil for the Donkey in Graveyard Keeper

After leveling up the cemetery in Graveyard Keeper by using repair kits, planting flowerbeds, and crafting new headstones, players will be elevated to the status of cleric by the Bishop. This comes with many positives, but the donkey who delivers corpses isn’t too pleased about being left behind in the mud. The donkey demands payment in carrots, which can be grown via farming or bought, and he also won’t deliver any more corpses until he’s been given oil for his squeaky cart wheels.