Mark LT 2WD V8-5.4L VIN 5 (2007)
Transmission Cooler: Component Tests and General Diagnostics
Transmission Fluid Cooler Leaks at Radiator
Transmission fluid may leak between the radiator transmission fluid cooler and the transmission fluid cooler fitting (not the cooler line into the fitting),
which may result in a residue of transmission fluid on the radiator tank around the fluid cooler fitting. Insufficient thread sealer on the transmission fluid
cooler fitting may cause this.