Are most people doing drain and fills on these trucks?2010 LX570 124k miles. Did transmission flush (full 14 quart flush) through transmission cooling line. Absolutely amazed at the outcome. Simply did as a PM, as I did not think I was having any shifting problems. Apparently, very slowly over time my shifting had become a tiny bit rough. Post-flush it is amazingly smooth, better than I ever remember it being. If you're on the fence about this PM...DO IT!