OK I did transmission fluid flush on my 02 4.4i

[Hoser]

There are not many companies around that know more about automatic transmissions than Allison. They had to come up with new oil formulations when GM dropped certification of Dexron. When that happened everyone was open to put burro pee in a can and call it dexron. The engineer who wrote the specs on Allison's replacement synthetic Syntec when retired, joined an RV forum about Allison. They were forced to re-adjust their thinking about lifespan of trans fluid-even with their new super juice. To those who "know" someone who changed their fluid/fliter in their automatic and ended up blowing up their trans- I think I would challenge them to name names. It only stands to reason that removing any of the dirt and byproducts of a piece of machinery with friction surfaces and replaceing the lubricant with fresh new lubricfant, can only do good for the same reason it does in an engine. I doubt that any machine manufacturer has their own oil well, oil research section, testing labs, health & safety standards approval section (this stuff is in human contact). I think it is safe to say BMW and others use rebadged cans of lubricants and chemicals. The fact that Ford uses the same ZF6HP26 tranny in a Lincoln Navigator and specs Motorcraft Mercon SP fluid at $8/liter should be a little enlightening to those who are receptive.