Ford galaxy 1998 Taurus Owner's Manual page 196

Maintenance and care
Do not spray with cold water to
avoid cracking the engine block
or other engine components.
Cover the highlighted areas to
prevent water damage when
cleaning the engine.
Never wash or rinse the engine
while it is running; water in the
running engine may cause
internal damage.
Cleaning 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. Use
glass cleaner or tar remover if
necessary.
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