BP at 3159 West Chicago Avenue, Chicago, Illinois.

Not sure if the operator of the car wash knows English. We were under the impression that gas was $1.99 WITH A CAR WASH and $2.59 without. When the car wash operator had asked us which car wash we had wanted, we had pointed to the gas price sign and said "the one that gets us cheaper gas". Went around after wash was complete and there wasn't a place to enter the car wash number into the gas pump's screen.Had to go imside just to be told that the car wash code meant nothing! Went to Speedway instead!