1996 Ford F150 Owner's Manual - Page 323

If your vehicle is over 8500 GVWR and the above conditions do not apply, change the engine oil and oil filter every 6 months or 5,000 miles (8,000 km), whichever comes first. Refer to the Maintenance Schedule and Record booklet for additional information. NOTE: Refer to the Power Stroke Diesel Engine Owner's Guide Supplement for oil viscosity, filter application and oil and filter change intervals. NOTE: Always dispose of used automotive fluids in a responsible manner. Follow your community's standards for disposing of these types of fluids. Call your local recycling center to find out about recycling automotive fluids. RWARNING Continuous contact with USED motor oil has caused cancer in laboratory mice. Protect your skin by washing with soap and water. Engine Coolant Checking the engine coolant Your vehicle's engine coolant protects the engine from overheating in the summer and from freezing in the winter. Check the level of the engine coolant at least once a month, but preferably each time you stop for fuel. Simply look at the engine coolant recovery reservoir located in the engine compartment. To locate this reservoir, see the diagram of your vehicle's engine under Engine types in this chapter. 324