Ok. Im going to replace the external filter and add a trans cooler to my ODy. Runs great. Has a slight whine when running but shifts great otherwise. Will shift hard into reverse if I do not let it warm up. Question is should I even bother at this point with a cooler or the trans filter and should i flush or just drain and fill the three quarts. I did have a shop flush about all it could at around 110000 miles. Thanks for the help.