I have change the oil in my 1999 using the method of connecting a hose to the outer line of the cooler then starting the truck. Catching about 10 quarts using this method before removing the pan. I reviewed the article in issue # 64 page 11 for a proceedure on 94-07 written by Robert Patton
to try and change the oil in my 06. I find the outboard line does not appear to have a fitting that I can disconnect. It has a fitting I am not familiar with connected directly to the outboard port on the cooler. The inboard port has a short hose about 10 inches and then connects to a fitting I could take apart with a wrench. Question is are the in and out of the cooler on the 06 switched with the cold line inboard on the cooler output ? Is there a method of releasing the coupling on the outboard port if it is the return line ?
Input appreciated

Input appreciated