Hi folks, newb mazda owner here. I used to work in a transmission shop. I honestly believe in changing your tranny fluid every 30,000 miles. That being said, I just bought a 2014 mazda 6 with 68,000 miles on it. I asked the dealership i bought it from to do a transmission flush and change the filter. They told me not necessary until 100,000 miles and even then its just inspection. I told them sorry, I want to flush the fluid and change the filter. Local dealership said there is no filter to change. I showed them the part number for a filter and went to a different dealership. 2nd dealership called in the shop foreman to talk with me. I asked him how often he changed his fluid. He said he didnt drive a mazda but did his every 30,000 just like me. He said there is no way to connect the flush machine to the skyactive tranny to do a catalytic converter flush so all they could do was drop the pan install a new filter and run the 4 quarts through which only removes about half the old fluid. I would have to run it for an hour or so and drain and repeat to get more of the converter fluid out. I caught the shop foreman in the break room and slipped him a 20$. When he gave me the car back he said he dug up about 3 more quarts in the shop and ran it through so if i believe him i should be good to go for another 60,000 between what i believe and the factory does. The mazda tranny fluid is blue and expensive. Its a non maintenance item because they last past the warranty but just barely. If you plan on keeping your car and driving the wheels off it like i do mine change the blue stuff and drop the pan, do the filter and do more than the single flush. My opinion fwiw.
Heres the scary part. You could ask for the same thing but your local stealership may stroke you and not bother to drop the pan and put in the filter, but just charge you for it thinking your crazy for asking for it. Maybe asking for the old filter back would help. Reinforcing what i just posted. The fluid is not supposed to be green or brown. Its supposed to be blue. Mine is now.