He must have had a kick ass pump.
Think about the lift, head pressure, and rate of flow that you would want to transfer any large amount of fuel out from an underground tank.
My first thought was that he had a fuel tanker truck that he would drive up with when the station closed and pretend to pump fuel in.
Thanks for the heads up.
I think everyone’s lucky he didn’t blow himself, the station and part of the neighborhood to smithereens!