2010 Ford Mustang Owner's Manual - Page 253

Cleaning ENGINE Engines are more efficient when they are clean because grease and dirt buildup keep the engine warmer than normal. When washing: • Take care when using a power washer to clean the engine. The high-pressure fluid could penetrate the sealed parts and cause damage. • Do not spray a hot engine with cold water to avoid cracking the engine block or other engine components. • Spray Motorcraft Engine Shampoo and Degreaser (ZC-20) on all parts that require cleaning and pressure rinse clean. In Canada, use Motorcraft Engine Shampoo (CXC-66-A). • Never wash or rinse the engine while it is running; water in the running engine may cause internal damage. • Never wash or rinse any ignition coil, spark plug wire or spark plug well, or the area in and around these locations. • Cover the highlighted areas to prevent water damage when cleaning the engine. 4.0L V6 ENGINE 253