2011 Ford Mustang Owner Guide 3rd Printing - Page 277

Maintenance and Specifications Use SAE 5W-20 engine oil Only use oils certified for gasoline engines by the American Petroleum Institute (API). An oil with this trademark symbol conforms to the current engine and emission system protection standards and fuel economy requirements of the International Lubricant Standardization and Approval Committee (ILSAC), comprised of U.S. and Japanese automobile manufacturers. To protect your engine and engine's warranty, use Motorcraft௡ SAE 5W-20 or an equivalent SAE 5W-20 oil meeting Ford specification WSS-M2C930-A. SAE 5W-20 oil provides optimum fuel economy and durability performance meeting all requirements for your 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 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. 277 2011 05+ Mustang (197) Owners Guide, 3rd Printing USA (fus)