1997 Ford F150 Owner Guide 1st Printing - Page 160

Maintenance and care Oil filters 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 that you use the appropriate Motorcraft oil filter (or another brand meeting Ford specifications) for your engine application. Checking engine oil Check the engine oil each time you fuel your vehicle. Check the engine oil level more frequently if the vehicle is carrying a heavy load, towing a trailer, idling for extended periods (like police, taxi or shuttle service vehicles) or driven at high speeds for extended periods of time. To check the oil: 1. Make sure the vehicle is on level ground. If the engine is warm, turn the engine off and wait a few minutes for the oil to drain into the oil pan. 2. Set the parking brake and ensure the gearshift is latched in P (Park) (automatic transmission) or 1 (First) (manual transmission). 3. Open the hood. Protect yourself from engine heat. 4. Locate and carefully remove the 161