I was able to add more oil to the tranny by pumping it though the cooling line.



Background I changed the tranny oil years ago on a 2005 4.4i but was not able to add back the amount of oil I took out (I measure it) I was about 1/2 to 3/4 quart short. It was hard shifting at cold from 1 to 2 and suspect not enough oil in the tyranny. You can search my previous threads.



Using a hand gear oil pump I was able to pump tranny oil into the transmission through the tranny oil cooler line next to the radiator. I have to disconnect the oil cooling line to the cooler first of course.



And the hard shifting went away did this a few years ago. But I don't much so it take time for me to make sure the problem is solved. Hope this help someone.