I changed the transmission fluid in our 1996 850 NA last weekend. It has about 160,000 miles on it. The fluid was brown, about the color of used motor oil. I used the method that pumps out the fluid from the top hose to the radiator.
About 450 miles have been added since with no negative issues. I would like to add that the advise to use a pair of C clip pliers to spread the clip at the radiator is good advise. I broke mine and had to buy another one.
Shifting seems about the same but my conscience is much clearer.
Hawkeye
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