FORD 2011 F-550 v.4 - Manual (Page 359)

• 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.
• Never wash or rinse the engine while it is hot or 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.
• 6.2L V8 gasoline engine
Cleaning
359
2011 F-250/350/450/550 (f23)
Owners Guide, 4th Printing
USA (fus)