At the Gas Station

 is the second episode of Neptune's Boat (spin-off).

Plot
Neptune drives his boat around town 120 times. So, his boat begins to lose fuel. Neptune goes to the Real Shell gas station. The tank is full so he does over and over again. After going there 568 times, he curses his boat for losing fuel. However, the boat returns as Sail Monster!

see At the Gas Station (transcript)