I'm new to this site. Hope I'm posting correctly. I just bought a 2003 GS300 with 114,000 miles. One owner in awesome shape. With the mileage I have, do I need to change the transmission filter or just the oil. Does anyone have a good link to show how to do a good complete flush. Also, if I change the filter, is there anything else I should do while I have the pan off? Thanks.