A dual-fluid receptacle for a diesel vehicle includes an outer wall disposed on an outer surface of the vehicle. The outer wall defines a diesel receptacle for receiving diesel fuel, a diesel-exhaust receptacle adjacent the diesel receptacle for receiving a diesel-exhaust fluid, and a bridge portion disposed between the diesel and diesel-exhaust receptacles. The receptacles are configured to simultaneously receive the diesel fuel and diesel-exhaust fluid from a single fluid dispensing unit. This allows an operator to fill the vehicle with diesel fuel and diesel-exhaust fluid, simultaneously, from a single fluid dispensing unit. A projection extends from the outer wall proximate to at least one of the two receptacles. The projection is configured to cooperate with an engagement feature of the fluid dispensing unit to selectively enable dispensing of diesel.