2004 Jeep Grand Cherokee Owner's Manual - Page 224
2004 Jeep Grand Cherokee Manual
Page 224 highlights
224 STARTING AND OPERATING CAUTION! If the "Malfunction Indicator Light" is flashing, immediate service is required. See "Onboard Diagnostic System" in Section 7 of this manual. Materials Added To Fuel All gasoline sold in the United States is required to contain effective detergent additives. Use of additional detergents or other additives is not needed under normal conditions. FUEL TANK FILLER CAP (GAS CAP) WARNING! To avoid fuel spillage and overfilling, do not "top off" the fuel tank after filling. The gas cap is located behind the fuel filler door, on the left side of the vehicle. If the gas cap is lost or damaged, be sure the replacement cap has been designed for use with this vehicle. When the gas cap is removed for refueling, it can be placed in the fuel filler door while filling the fuel tank.