I have an 04 Marauder with 22K, I was thinking of doing 6 ounces of Auto-Rx at 29K, then flush the trans at 30K and add Amsoil ATF, is doing the Auto-Rx thing in the transmission a waste of time, I currently have a filtermag magnet on the bottom of the pan, any advice would be appreciated. By the way the transmission is the 4R75W model.