I just bought an 05 acura mdx 2 weeks ago, drove it yesterday for a decent trip. Made it 2 hours from home and transmission starts to slip. Needless to say it slipped completely and I was stranded. It has 193K on it but all regular maintenance done water pump fuel pump tune up transmission flush etc. Not leaking any fluids. My fluid was brown and smelled burnt no smoking. My question is what caused this to happen and how fast could it have happened. Trying to figure out if I caused it or if I potentially bought this car with issues and no knowledge please help.