2014 Lincoln Navigator Owner Manual Printing 1 - Page 168

Fuel and Refueling 167 Note: Use of any fuel other than recommended fuel can cause powertrain damage, impair the emission control system or cause loss of vehicle performance. Any damage to the vehicle that is caused by the use of fuel not recommended will not be covered under warranty. Choosing the Right Fuel With a Flex Fuel Vehicle (If Equipped) Use only UNLEADED gasoline or UNLEADED gasoline blended with a maximum of 85% ethanol (E-85) in your Flex Fuel Vehicle (FFV). If your vehicle is flex fuel capable, it will have a yellow bezel placed over the fuel fill inlet. Do not use: • fuels containing more than 85% ethanol or E-100 fuel • fuels containing methanol • fuels containing metallic based additives, including manganese-based compounds • fuels containing the octane booster additive, methylcyclopentadienyl manganese tricarbonyl (MMT) • leaded-fuel (The use of leaded fuel is prohibited by law) Use of any fuel other than recommended fuel can cause powertrain damage, impair the emission control system or cause loss of vehicle performance. Any damage to a vehicle that is caused by use of fuel not recommended will not be covered under warranty. Octane Recommendations Regular unleaded gasoline with a pump (R+M)/2 octane rating of 87 is recommended. Some stations offer fuels posted as Regular with an (R+M)/2 METHOD octane rating below 87, particularly in high altitude areas. Fuels with octane levels below 87 are not recommended. Premium fuel will provide improved performance and is recommended for severe duty usage such as trailer tow. Do not be concerned if your engine sometimes knocks lightly. However, if it knocks heavily under most driving conditions while you are using fuel with the recommended octane rating, see your authorized dealer to prevent any engine damage. 87 2014 Navigator (nav) Owners Guide gf, 1st Printing, June 2013 USA (fus)