So I have had my jeep a little over 3 months. Done alot of maintenance on it so far. Was having issues while driving down the highway, it randomly would downshift for a couple seconds then go back. It did this at any speed and didn't matter how much gas I was giving it. Changed the transmission fluid today and it was as dark as oil after 3000+ miles. Could that have been the issue or something else? I drove it a little bit to try it out and it was doing it still at first but didn't do it on the way home. It doesn't always do it so not sure if it's fixed yet. Just curious if that could have been the issue or possibly something else?