Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Doing the transmission fluid now. Last night I drained the pan (I was over the moon when I saw a drain plug in the bottom of the 4r100!!!). I got a little over 4 qts from the pan alone. Then I drained the torque converter. I haven't measured that yet but I suspect it to be about 7 qts. I think I might try shifting through the gears (engine not running) to see if I can find some more fluid. Then I'll remove the pan and replace the filter.
The fluid did not smell burnt (perhaps I don't know what burnt Mercon smells like) but it was not pink anymore. It is sort of a greyish color. I had been noticing my trans temp (Scangauge) reading as high as 223 lately (coolant temp as high as 206).
I also ordered a Hayden transmission cooler to replace the factory external cooler. I have one on my Explorer and it seems to work well. The Hayden is probably about 2 to 3 times as large as the factory. I'll post pics.