I know this topic has a lot of coverage so I apologize if this has been answered. We recently got a 2013 CRV and the last documented transmission fluid change was at 45k miles. It now has 120k miles so I’d like to change the transmission fluid and diff fluid asap. With the transmission drain and fill, I plan to do it every 30k miles. I was wondering if at that interval moving forward, should I be doing the drain and fill 3 times with some driving in between in order to replace all of the fluid? Or at every 30k miles should I just be doing 1 drain and fill each time? Thanks in advance!