1999 Ford F150 Owner Guide 1st Printing - Page 182

Maintenance and care TRANSMISSION FLUID Checking automatic transmission fluid Refer to your Scheduled Maintenance Guide for scheduled intervals for fluid checks and changes. Your transmission does not consume fluid. However, the fluid level should be checked if the transmission is not working properly, i.e., if the transmission slips or shifts slowly or if you notice some sign of fluid leakage. Automatic transmission fluid expands when warmed. To obtain an accurate fluid check, drive the vehicle until it is at normal operating temperature (approximately 30 km [20 miles]). If your vehicle has been operated for an extended period at high speeds, in city traffic during hot weather or pulling a trailer, the vehicle should be turned off for about 30 minutes to allow fluid to cool before checking. 1. Drive the vehicle 30 km (20 miles) or until it reaches normal operating temperature. 2. Park the vehicle on a level surface and engage the parking brake. 3. With the parking brake engaged and your foot on the brake pedal, start the engine and move the gearshift lever through all of the gear ranges. Allow sufficient time for each gear to engage. 4. Latch the gearshift lever in P (Park) and leave the engine running. 5. Remove the dipstick, wiping it clean with a clean, dry lint free rag. 6. Install the dipstick making sure it is fully seated in the filler tube. 7. Remove the dipstick and inspect the fluid level. The fluid should be in the designated area for normal operating temperature (H) or ambient temperature (C). Low fluid level Do not drive the vehicle if the fluid level is at the bottom of the dipstick and the ambient temperature is above 10°C (50°F). ADD COLD HOT DO NOT ADD DON'T ADD 182