2011 Ford F450 Super Duty Crew Cab Owner Guide 4th Printing - Page 373

Maintenance and Specifications vehicle's engine. Refer to Maintenance product specifications and capacities later in this chapter for more information. Do not use supplemental engine oil additives, cleaners or other engine treatments. They are unnecessary and could lead to engine damage that is not covered by Ford warranty. Change your engine oil and filter according to the appropriate schedule listed in the scheduled maintenance information. Ford production and Motorcraft௡ replacement oil filters are designed for added engine protection and long life. If a replacement oil filter is used that does not meet Ford material and design specifications, start-up engine noises or knock may be experienced. It is recommended you use the appropriate Motorcraft௡ oil filter or another with equivalent performance for your engine application. BATTERY WARNING: This vehicle may be equipped with more than one battery, removal of cable from only one battery does not disconnect the vehicle electrical system. Be sure to disconnect cables from all batteries when disconnecting power. Failure to do so may cause serious personal injury or property damage. Your vehicle is equipped with a Motorcraft௡ maintenance-free battery which normally does not require additional water during its life of service. If your battery has a cover/shield, make sure it is reinstalled after the battery has been cleaned or replaced. For longer, trouble-free operation, keep the top of the battery clean and dry. Also, make certain the battery cables are always tightly fastened to the battery terminals. If you see any corrosion on the battery or terminals, remove the cables from the terminals and clean with a wire brush. You can neutralize the acid with a solution of baking soda and water. 373 2011 F-250/350/450/550 (f23) Owners Guide, 4th Printing USA (fus)