Ford F250 three-quarter ton and higher trucks were redesigned for the 1999 model year, so only minor changes were made for the 2000 model year. These trucks used the Super Duty nameplate and shared almost no mechanical or body parts with Ford F150 half-ton trucks. A 7.3-liter Powerstroke diesel V-8 engine manufactured by Navistar -- formerly International Harvester -- was offered as an option in the 2000 Super Duty. The extra torque and horsepower output of this engine may create extra stress on the transmission, necessitating frequent checking of the transmission fluid.
Drive the truck until it reaches operating temperature -- approximately 20 miles.
Park on a level area and apply the emergency brake. Place your foot on the brake pedal and move the shift lever though each gear. Allow ample time to permit the gear to engage in each position on the quadrant.
Place the gear selector in park and leave the motor running.
Open the hood and locate the transmission dipstick tube on the passenger side of the engine near the firewall. Pull the dipstick from the tube and wipe the end of it clean with a lint-free cloth. Insert the dipstick back into the tube until it fully seats.
Pull the dipstick back out of the tube and observe the fluid level. Note that the transmission fluid level should be between the two marks on the "Hot" section of the dipstick.
Turn the engine off and apply the emergency brake.
Slide under the truck and locate the filler plug on the side of the transmission case.
Clean the filler plug and the surrounding transmission case with a rag to prevent dirt particles from entering the case when you remove the plug.
Remove the plug with a wrench. Peer into the hole. Note that the transmission fluid level should come up to the bottom of the hole.
Replace the filler plug and tighten it with a wrench.
