How do you get oil on epic duel for junker?

To acquire oil for the Junker in Epic Duel, you need to engage in battles and complete various missions or tasks that may yield oil as a reward. You can also participate in events or challenges specifically designed to grant resources like oil. Additionally, check shops or vendors in the game, as they might offer oil for purchase. Lastly, collaborating with other players or trading can be another way to obtain oil.