Don't get it flushed and don't bring it anywhere to get done. Go to your dealer and buy 3 Qts of Honda ATF. You don't even have to jack up the car. You should be able to take out the plug and have enough clearance for a pan. According to my owner's manual this will only get out 1/3 (about 2.6 Qts) of the old fluid, so they recommend drain/refill, drive it and repeat the whole process for a total of 3 refills. That whole process would cost $150 at my local dealer. I just do one drain/refill a year while I'm under there doing the oil. Also, my dealer doesn't recommend a new washer each time, but I guess it wouldn't hurt. As far as I can tell it doesn't crush like the oil plug washer.