I have an '04 legacy outback with 117K. I've only had this car for a few months now. Soon after I bought it I took it to our usual subaru mech. to check it out. He said the trans fluid was a little low so he did the drain, add, and new filter. Soon after that I gave it an oil change and thought to myself that a little more than usual came out. I just marked it up as the previous owner put too much in. Later on I checked the oil and saw the level was way higher than it should be, slightly thinner, and had a red tint. I know this isn't good at all and will do another oil change, but I'm in the process of moving and was wondering if anybody had any idea of what is causing this. I've read others mentioning this online but with different vehicles and only one mentioned a transmission vacuum diaphragm, or modulator valve. Any help will be welcome.