This is my first posting new to this website. My first car which is a 2007 Mazda 6S 3.0L V6 with. I currently have 77k miles on it. I never mistreat the car and love it to death. So I noticed that when the transmission (ATX) shifts from first too second it kind of jerks a bit. When i first got it, it smoothly shifted. Or when i slow down and let the RPM's go down a bit and accelerate just a tad the car jumps. So i check the trans fluid It was a brown color with specs in it. It did not smell burnt at all. i took it to a mechanic and he said to not change the oil at all to leave it the way it is. I know this certain oil on this car is *special*. Every shop i go to has to special order it and it either that or they never have seen that type of oil. So my question is...is the tranny slipping? Do I need to flush the fluids out and change the filter? I might be completely off. I know tranny fluid is supposed to be a pink or red but this is a brown metallic. So im wondering is the oil naturally supposed to be like that b/c in the owners manual i see nothing for a transmission oil change. Thank you any help regarding this would be great.
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