FORD 2001 F-550 v.2 - Manual (Page 246)

Cleaning the 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 with cold water to avoid cracking the engine block or
other engine components.
• Never wash or rinse the engine while it is running; water in the
running engine may cause internal damage.
Cleaning non-painted plastic exterior parts
Use vinyl cleaner for routine cleaning. Clean with a tar remover if
necessary. Do not clean plastic parts with thinners, solvents or
petroleum-based cleaners.
Cleaning the exterior lamps
Wash with the same detergent as the exterior of your vehicle. If
necessary, use a tar remover such as Ford Extra Strength Tar and Road
Oil Remover (B7A-19520–AA).
To avoid scratching the lamps, do not use a dry paper towel, chemical
solvents or abrasive cleaners.
Maintenance and care
246