2000 Mercury Mystique Owner's Manual - Page 182
2000 Mercury Mystique Manual
Page 182 highlights
Maintenance and care Battery Your vehicle may be equipped with a Motorcraft maintenance-free 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, refer to the "Scheduled Maintenance Guide" for additional information. Keep the electrolyte in each cell up to the "level" indicator. Do not overfill the battery cell. 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 and water. Reinstall the cables when you are done cleaning them, and apply a small quantity of grease to the top of each battery terminal to help prevent corrosion. 182