2005 Ford Expedition Owner's Manual - Page 356

Maintenance and Specifications Some transmission fluids may be labeled as dual usage, such as MERCON and MERCON V. These dual usage fluids are not to be used in an automatic transmission that requires use of the MERCON type fluid. However, these dual usage fluids may be used in transmissions that require the MERCON V type fluid. MERCON and MERCON V type fluids are not interchangeable. DO NOT mix MERCON and MERCON V. Use of a transmission fluid that indicates dual usage (MERCON and MERCON V) in an automatic transmission application requiring MERCON may cause transmission damage. Use of any fluid other than the recommended fluid may cause transmission damage. Indicates only approximate dry-fill capacity. Some applications may vary based on cooler size and if equipped with an in-tank cooler. The amount of transmission fluid and fluid level should be set by the indication on the dipstick's normal operating range. 3 4 2 Add the coolant type originally equipped in your vehicle. Your vehicle's rear axle is filled with a synthetic rear axle lubricant and is considered lubricated for life. These lubricants are not to be checked or changed unless a leak is suspected, service is required or the axle has been submerged in water. The axle lubricant should be changed any time the axle has been submerged in water. Add 4 oz. (118 ml) of Additive Friction Modifier XL-3 (or equivalent) for complete refill of Limited Slip axles. For complete refills, fill using the Additive Friction Modifier first. Use of synthetic or synthetic blend motor oil is not mandatory. Engine oil need only meet the requirements of Ford specification WSS-M2C930-A and the API Certification mark. 6 5 356 2005 Expedition (exd) Owners Guide (post-2002-fmt) USA (fus)