Ford Grand Marquis Owner's Manual page 241

any automotive repair establishment or
individual using automotive parts equivalent to
those which your vehicle or engine was
originally equipped.
Ford strongly recommends the use of genuine
Ford replacement parts. If other than Ford or
Motorcraft parts or Ford authorized
remanufactured parts are used for maintenance
replacements or for the service of components
affecting emission control, such non-Ford parts
should be equivalent to genuine Ford Motor
Company parts in performance and durability. It
is the owner's responsibility to determine the
equivalency of such parts. Please consult your
warranty booklet for complete warranty
information.
Do not park, idle, or drive your vehicle in
dry grass or other dry ground cover. The
emission system heats up the engine
compartment and exhaust system, which
can start a fire.
Watch for fluid leaks, strange odors, smoke, loss
of oil pressure, the charge warning light, the
check engine light, or the temperature warning
light. These sometimes indicate that the emission
system is not working properly.
Do not make any unauthorized changes to your
vehicle or engine. Changes that cause more
unburned fuel to reach the exhaust system can
increase the temperature of the engine or
exhaust system.
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