1999 Ford Explorer Owner Guide 1st Printing - Page 208

Maintenance and care Do not use supplemental engine oil additives, oil treatments or engine treatments. They are unnecessary and could, under certain conditions, lead to engine damage which is not covered by your warranty. Change your engine oil and filter according to the appropriate schedule listed in the Scheduled Maintenance Guide. Ford production and aftermarket (Motorcraft) oil filters are designed for added engine protection and long life. If a replacement oil filter is used that does not meet Ford material and design specifications, startup engine noises or knock may be experienced. It is recommended you use the appropriate Motorcraft oil filter (or another brand meeting Ford specifications) for your engine application. BRAKE FLUID Checking and adding brake fluid Brake fluid should be checked and refilled as needed. Refer to the Scheduled Maintenance Guide for the service interval schedules: 1. Clean the reservoir cap before removal to prevent dirt or water from entering the reservoir. 2. Visually inspect the fluid level. 3. If necessary, add brake fluid until the level reaches MAX. Do not fill MAX above this line. 4. Use only a DOT 3 brake fluid certified to meet Ford specifications. Refer to Lubricant specifications in the Capacities and specifications chapter. 208