Dreaming about working at a gas station can symbolize the need for energy, resources, or emotional fuel. Gas stations are places where we refuel, so this dream might reflect your uncle's feelings about being recharged or supported in his life.

The fact that he worked during the day and you worked at night could indicate a balance of responsibilities or roles in your relationship. It may suggest a sense of teamwork or reliance on each other, where both of you contribute in your own ways.

His question about staying longer on a busy night might indicate concerns about support and the importance of being there for each other during challenging times. This could reflect his desire to ensure that everything is handled smoothly, especially when things get hectic.

Overall, this dream could be a representation of collaboration, responsibility, and the need for support. It might be beneficial for him to consider how he can balance his own needs with those of others in his life.