2002 Ford Explorer Owner's Manual - Page 147

Maintenance and Specifications SAE 5W-30 engine oil recommendation Use only oils "Certified For Gasoline Engines" by the American Petroleum Institute (API). Use Motorcraft (Part: XO-5W30-QSP U.S.) or an equivalent oil meeting Ford Motor Company specification WSS-M2C205-A. It is also recommended that you use the appropriate Motorcraft oil filter or an equivalent filter meeting the Ford Motor Company specification for your engine. Change your engine oil and filter according to the Scheduled Maintenance Guide. BATTERY Your vehicle has a Motorcraft maintenance-free battery that normally does not require additional water. Check the battery electrolyte level under severe usage. Refer to the Scheduled Maintenance Guide. If the level is low, add plain tap water. If possible, use distilled water. If the battery needs water often, have the charging system checked. Note: The electrolyte level in each cell should be at the "level indicator." Do not overfill the battery cells. Keep the top of the battery clean and dry. Also, make certain the battery cables are always tightly fastened to the terminals. If your battery has a cover/shield, make sure it is reinstalled after cleaning or battery replacement. Batteries normally produce explosive gases which can cause personal injury. Do not allow flames, sparks or lighted substances to come near the battery. When working near the battery, always shield your face and protect your eyes. Always provide proper ventilation. 147