Ford Mercury Villager 1997 Owner's Manual page 297

Automatic transmission fluid dipstick
NOTE: Always dispose of used automotive fluids in a
responsible manner. Follow your community's
standards for disposing of these types of fluids. Call
your local recycling center to find out about recycling
automotive fluids.
NOTE: Always use Motorcraft MERCON or equivalent
MERCON automatic transmission fluid when you
refill your automatic transmission fluid.
Battery
The Motorcraft maintenance-free battery normally does not
require additional water during its life of service. However, for
severe service usage or in high temperature climates, check your
battery electrolyte level, at least every 24 months or 24,000
miles (40,000 km). Keep the electrolyte in each cell up to the ''level''
indicator. Do not overfill the battery cells. For longer,
trouble-free operation, keep the top of the battery clean and dry.
Also, make certain the battery cables are always tightly
fastened to the battery terminals.
If you see any corrosion on the battery cables or terminals,
remove the cables from the terminal(s) and clean with a wire
brush. You can neutralize the acid with a solution of baking soda
Maintenance and Care
293