Lincoln 2002 Blackwood Owner's Manual page 209

Maintenance and care
Underbody
Flush the complete underside of your vehicle frequently. Keep body and
door drain holes free from packed dirt.
Protecting the paint finish of your vehicle
Applying a polymer paint sealant to your vehicle on a regular basis will
assist in reducing minor scratches and paint damage.
A typical paint sealant lasts approximately six months to a year,
depending on local weather conditions and the cleaning soap that is used
in washing the vehicle.
Do not use a wax that beads excessively.
Do not allow paint sealant to come in contact with any non-body
(low-gloss black) colored trim, such as grained door handles, roof
racks, bumpers, side moldings, mirror housings or the windshield
cowl area. The paint sealant will "gray" or stain the parts over
time.
Repairing paint chips
Remove particles such as bird droppings, tree sap, insect deposits, tar
spots, road salt and industrial fallout before repairing paint chips.
Minor scratches or paint damage from road debris may be repaired using
the Ultra Touch Prep and Finishing Kit (F7AZ-19K507–BA), which is
available at your authorized Ford, Lincoln or Mercury dealer. This kit
contains:
• Lacquer Touch-Up Paint (ALBZ-19500–XXXXA)
• Exterior Acrylic Spray Lacquer (ALAZ-19500–XXXXA)
Please note that the part numbers (shown as XXXX above) will vary with
your vehicle's specific coloring. Carefully observe the application
instructions on the products.
Cleaning the wheel rims and covers
Aluminum wheel rims or covers are coated with a clearcoat paint
finish.
Some automatic car washes may cause damage to the finish on your
wheel rims or covers. Chemical-strength cleaners, or cleaning chemicals,
in combination with brush agitation to remove brake dust and dirt, could
wear away the clearcoat finish over time.
Do not use hydrofluoric acid-based or high caustic-based wheel
cleaners, steel wool, fuels or strong household detergents for
soiled wheel rims and covers.
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