Transmission Fluid Changes (Important)
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Transmission Fluid Changes (Important)
Below is a cut & paste from Dieselman's website:
The TorqShift transmission uses a new fluid--Mercon SP. This is not interchangeable with Mercon (Dextron), Mercon V, or synthetic Mercon. Since there is no torque converter drain, servicing is ment to be done by automatic flush machine. The external filter--mounted on the cooler lines near the radiator--needs to be replaced at the service. Ford has no service interval for the internal pickup filter. I think it is a good idea to replace the internal filter at the service intervals as cheap insurance against a failure. There is a second transmission filter screen that is part of the valve body gasket, but it does not need to be replaced unless the transmission is being repaired. If a flush machine is not available, the trans pan does have a fluid drain. You can either drain and refill the transmision pan, start the engine to circulate the fluid, then drain and refill again. Or, drain and refill the pan, then remove the cooler return line and direct it to a drain pan. Start the engine and as fluid is expelled from the cooler line, add fluid to maintain the level in the pan. It may be more advantagious to have a someone helping you for this method. Replace the external filter after changing the fluid. The external transmission filter is installed on a by-pass, so it only filters 10% of the fluid flow. I would be advantageous to install a secondary filter to capture any contaminates the factory one misses.
The TorqShift transmission uses a new fluid--Mercon SP. This is not interchangeable with Mercon (Dextron), Mercon V, or synthetic Mercon. Since there is no torque converter drain, servicing is ment to be done by automatic flush machine. The external filter--mounted on the cooler lines near the radiator--needs to be replaced at the service. Ford has no service interval for the internal pickup filter. I think it is a good idea to replace the internal filter at the service intervals as cheap insurance against a failure. There is a second transmission filter screen that is part of the valve body gasket, but it does not need to be replaced unless the transmission is being repaired. If a flush machine is not available, the trans pan does have a fluid drain. You can either drain and refill the transmision pan, start the engine to circulate the fluid, then drain and refill again. Or, drain and refill the pan, then remove the cooler return line and direct it to a drain pan. Start the engine and as fluid is expelled from the cooler line, add fluid to maintain the level in the pan. It may be more advantagious to have a someone helping you for this method. Replace the external filter after changing the fluid. The external transmission filter is installed on a by-pass, so it only filters 10% of the fluid flow. I would be advantageous to install a secondary filter to capture any contaminates the factory one misses.
