1997 Ford Explorer Severe Duty Supplement 1st Printing - Page 3

Severe service conditions • Continuously driving above normal highway speeds. • Driving in stop-and-go traffic. • Operating in extremely dusty conditions. If operating under these conditions, the air cleaner and emission filters must be replaced at more frequent intervals than normal. • Extensive idling (such as delivery use). Automatic transmission maintenance The automatic transmission fluid should be changed every 35,000 km (21,000 miles). The 5R55E automatic transmission fluid should be changed every 80,000 km (50,000 miles). If in addition to the specified severe duty operating conditions, your automatic transmission may need to be checked more frequently if your driving habits frequently include any of the following: • Using your vehicle as a snowplow. • Off road and 4x4 operation. Rear axle maintenance1 All rear axle lube quantities must be replaced every 160,000 km (100,000 miles)2 or anytime that the axle has been submerged in water. Excepting these conditions, the lube should not require 3 DON'T ADD IF IN CROSSHATCHED AREA • CHECK WHEN HOT IDLING IN PARK