1996 Lincoln Continental Owner's Manual - Page 242

/!\ WARNING 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. may be used if necessary. For optimum performance, premium fuel is recommended. Typical octane rating label In some parts of the country, "premium" grade fuels are sold with octane ratings of less than 91, especially in high altitude areas. It is recommended that you use only those "premium" fuels with an octane rating of 91 or higher. Do not be concerned if your vehicle sometimes knocks lightly when you drive up a hill or when you accelerate. However, see your dealer or a qualified service technician if persistent, heavy knocking occurs because this can damage the engine. Choosing the Right Fuel Use only PREMIUM UNLEADED FUEL in your vehicle. Using leaded fuel is prohibited by federal law. Your warranty may not apply if your vehicle is damaged because you used the wrong fuel. Octane recommendations The 4.6L engine is designed to operate on premium fuel with an octane rating of 91 or higher. Regular fuel with an octane rating of 87 240