Ford 1996 Contour Manual page 253

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.
Ford Gas Stabilizer should be added whenever actual or
expected storage periods exceed 60 days. Follow the instructions
on the label. The vehicle should then be operated at idle speed
to circulate the additive throughout the fuel system.
A volatile corrosion inhibitor added to the fuel system will
protect the fuel system's inner surfaces from corrosion. Follow
the instructions packaged with the product.
Cooling system
Protect against freezing temperatures.
Battery
Check and recharge as necessary.
Keep connections clean and covered with a light coat of
grease.
If storing your vehicle for more than 30 days without
recharging the battery, it may be advisable to disconnect the
battery cables to ensure battery charge is maintained for
quick starting.
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