Ford Mustang Owner's Manual page 267

Cover chrome and stainless steel parts with a
thick coat of auto wax to prevent
discoloration. Re-wax as necessary when the
vehicle is washed.
Lubricate all hood, door and trunk lid hinges
and latches with a light grade oil.
Cover interior soft trim to prevent fading.
Keep all rubber parts free from oil and
solvents.
Engine
Start engine every 15 days. Run at fast idle
until it reaches normal operating temperature.
With your foot on the brake, shift through all
the gears while the engine is running.
Fuel system
Fill fuel tank with high-quality unleaded fuel
until the first automatic shutoff of the fuel
pump nozzle.
NOTE: During extended periods of vehicle
storage (60 days or more), fuel may
deteriorate due to oxidation. This can
damage rubber and other polymers in
the fuel system and may also clog
small orifices.
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