2011 Ford F450 Super Duty Crew Cab Diesel Supplement 5th Printing - Page 21

Maintenance and Specifications SCHEDULED MAINTENANCE The scheduled maintenance services in the scheduled maintenance information of this supplement are required because they are considered essential to the life and performance of your vehicle. Use only recommended fuel, lubricants, fluids and service parts conforming to Ford specifications. Motorcraft௡ parts are designed and built for best performance in your vehicle. FUEL REQUIREMENTS - CHOOSING THE RIGHT FUEL: VEHICLES OPERATED WHERE ULTRA LOW SULFUR DIESEL FUEL IS REQUIRED (UNITED STATES/CANADA/PUERTO RICO/U.S. VIRGIN ISLANDS AND OTHER LOCALES) Use only Ultra Low Sulfur (15 ppm Sulfur Maximum) number 1-D or 2-D diesel fuel (also known as ULSD) in your 6.7L diesel engine. The engine and exhaust system were designed to only use this fuel. Look for the ULTRA-LOW SULFUR HIGHWAY DIESEL FUEL (15 ppm Sulfur Maximum) label on fuel pumps when purchasing your fuel. Using low sulfur diesel fuel (16-500 ppm) or high sulfur diesel fuel (greater than 500 ppm) in a diesel engine designed to use only Ultra Low Sulfur Diesel fuel will cause certain emission components to malfunction which may also cause the service light to illuminate indicating an emissionsengine soon related concern. Diesel fuel is adjusted seasonally for cold temperature. For best results at temperatures below 20°F (-7°C), it is recommended to use a diesel fuel which has been seasonally adjusted for the ambient conditions. See Cold weather operation in the Driving chapter of this supplement. FUEL REQUIREMENTS - CHOOSING THE RIGHT FUEL: VEHICLES OPERATED WHERE ULTRA LOW SULFUR DIESEL FUEL IS NOT REQUIRED For the engine to operate reliably on low sulfur or high sulfur diesel fuel, the engine must be a high sulfur configured engine or a ULSD fuel-configured engine that has been retrofitted for high sulfur diesel fuel use. 21 2011 Diesel (eco) Supplement, 5th Printing USA (fus)