Yeah I can understand waiting till the riding season is over to change seals but youll want to do it sometime soon. You can just pull the plugs at the bottom of the forks, let em drain, then compress them a few times to get the last bit out. Carefull itll shoot out like a super soaker(tm). When you remove the caps from the tubes make sure you keep downward force on them as you loosen them cuz while they wont shoot you with fluid, the springs may want to pop out a bit since they put constant pressure against the cap. Can be a bit difficult getting the caps back on because of the springs but not a real biggie. ATF fluid would be fine but you should also consider that they make different weight fork oils, 5, 10, 15w. The heavier the weight, the stiffer the forks so you can suit your preference by choosing the appropriate weight. Dont know how much you need for your specific forks though. Later.