I recently purchased a magnefine filter for my wife's 2003 Honda Accord. I am presently running Redline D-4 in the transmission after a complete flush by the Honda Dealer. I was planning to use Schaeffer's #204 next. If I install the magnefine filter, do I then simply drain and fill the transmission fluid as opposed to performing a complete flush? Does a complete flush potentially harm the transmission with a magnefine filter especialy if I wanted to use Auto Rx since the 50k interval will be coming up in a few months?