How to Change Transmission Oil in an F-150 Triton

Ford’s Modular engine, commonly referred to as the “Triton,” was first produced in 1991 and first installed in the F-150 in 1997. The powerful engine requires a durable transmission, and the best way to ensure that the transmission functions properly is to regularly change the transmission fluid. Fortunately, changing the transmission oil in a F-150 equipped with the Triton is a straightforward process.

Things You'll Need

  • Large container
  • Socket wrench
  • Long funnel
  • Approximately 7 qts. of Mercon V-type transmission fluid
  • Apply the parking brake and allow the engine at least 30 minutes to cool.

  • Place a container large enough to safely contain approximately 7 qts. of fluid underneath the pan on the bottom of the transmission.

  • Twist the drain bolt on the bottom of the pan in a counterclockwise direction with a socket wrench until the bolt detaches from the pan, then allow the transmission fluid to drain into the container.

  • Insert the transmission pan’s drain bolt into the pan, then twist the bolt in a clockwise direction with the socket wrench until the bolt is tight.

  • Raise the hood and withdraw the transmission’s dipstick.

  • Insert a long funnel into the transmission’s dipstick tube, then pour approximately 6 qts. of Mercon V-type transmission fluid into the funnel.

  • Turn the engine on and allow it to idle for approximately 30 seconds, then turn the engine off.

  • Insert the transmission’s dipstick into the transmission, then withdraw the dipstick and check the fluid level.

  • Add transmission fluid until the fluid level reaches the “FULL” mark on the dipstick.