1998 Ford Windstar Owner Guide 1st Printing - Page 300

Maintenance and Care 3. To replace the fuel cap, align the tabs on the cap with the notches on the filler pipe. Turn it clockwise until it stops. 4. Push the fuel door closed. If the Service Engine Soon warning light comes on and stays on when you start the engine, the fuel cap may not be properly seated. Turn off the engine, remove the fuel cap and replace it, being careful to align the cap properly. For more information, see Warning lights in the Index. If you lose the fuel cap, replace it with an authorized Motorcraft or equivalent part. RWARNING If you do not use the proper fuel cap, the pressure in the fuel tank can damage the fuel system or cause it to work improperly in a collision. NOTE: If you replace your fuel cap with an aftermarket fuel filler cap, the customer warranty may be void for any damage to the fuel tank and/or fuel system. Choosing the Right Fuel Use only UNLEADED FUEL. Using leaded fuel is prohibited by federal law. Any vehicle damage may not be covered by your warranty. Your vehicle was not designed to use fuel containing manganese-based additives such as MMT. Additionally, vehicles certified to California emission standards (indicated on the underhood Vehicle Emissions Control Information label) are designed to operate on California reformulated gasolines. If California reformulated gasoline is not available when you refuel, your vehicle can be operated on non-California fuels. However, even though your engine will perform adequately on 301