2013 Ford Focus Owner Manual Printing 3 - Page 171
2013 Ford Focus Manual
Page 171 highlights
170 Fuel and Refueling Ethanol is more chemically active than gasoline. It corrodes some metals and causes some plastic and rubber components to swell, break down or become brittle and crack, especially when mixed with gasoline. Special materials and procedures have been developed for flexible fuel vehicles and the dispensers used by ethanol fuel providers. FUEL QUALITY Note: Use of any fuel other than those recommended may cause powertrain damage and a loss of vehicle performance; repairs may not be covered under warranty. Choosing the Right Fuel Use only UNLEADED fuel or UNLEADED fuel blended with a maximum of 15% ethanol. Do not use fuel ethanol (E85), diesel fuel, fuel-methanol, leaded fuel or any other fuel because it could damage or impair the emission control system. Your vehicle was not designed to use fuel or fuel additives with metallic compounds, including manganese-based additives. The use of leaded fuel is prohibited by law. Choosing the Right Fuel With a Flex Fuel Vehicle (If Equipped) Note: If your vehicle is flex fuel capable, it will have a yellow bezel placed over the fuel fill inlet. Flex fuel vehicles are designed to use only FUEL ETHANOL (Ed75-Ed85) fuel blends which contain 51 to 83% ethanol and UNLEADED fuel regular unleaded gasoline or any mixture of the two fuels. It is best not to alternate repeatedly between gasoline and E85. If you do switch fuels, it is recommended that you add as much fuel as possible-at least half a tank. Do not add less than five gallons (18.9 liters) when refueling. You should drive the vehicle immediately after refueling for at least 5 miles (8 kilometers) to allow the vehicle to adapt to the change in ethanol concentration. If you exclusively use E85 fuel, it is recommended to fill the fuel tank with regular unleaded gasoline at each scheduled oil change. Your vehicle was not designed to use fuel or fuel additives with metallic compounds, including manganese-based additives. The use of leaded fuel is prohibited by law. 2013 Focus (foc) Owners Guide gf, 3rd Printing, November 2012 USA (fus)