2004 Subaru Outback Owner's Manual - Page 280

Starting and operating You will see the "FUEL DOOR " sign in the combination meter. This indicates that the fuel filler door (lid) is located on the right side of the vehicle. If the fuel filler cap is not tightened until it clicks or if the tether is caught under the cap, the CHECK ENGINE warning light may come on. Refer to the "Warning and indicator lights" section located in chapter 3. State emission testing (U.S. only) Testing of an All-Wheel Drive vehicle must NEVER be performed on a single two-wheel dynamometer. Attempting to do so will result in uncontrolled vehicle movement and may cause an accident or injuries to persons nearby. Never add any cleaning agents to the fuel tank. The addition of a cleaning agent may cause damage to the fuel system. Make sure that the cap is tightened until it clicks to prevent fuel spillage in the event of an accident. Do not let fuel spill on the exterior surfaces of the vehicle. Fuels may cause paint damage, which is not covered under the SUBARU Limited Warranty. Always use a genuine SUBARU fuel filler cap. If you use the wrong cap, it may not fit or have proper venting, and your fuel tank and emission control system might be damaged. Resultant vehicle damage due to improper testing is not covered under the SUBARU Limited Warranty and is the responsibility of the state inspection program or its contractors or licensees. At state inspection time, remember to tell your inspection or service station in advance not to place your SUBARU AWD vehicle on a two-wheel dynamometer. Otherwise, serious transmission damage will result. Some states have started using dynamometers in their state inspection programs in order to meet their - CONTINUED - 7-7