Hello all, I have had my 07 Double Cab since it was 11,000 miles young and have recently gone over the 105,000 mile mark. I have never changed the transmission fluid because I have always been told to leave it alone in the past , but it's feeling a bit sloppy lately, and I want to change it. (It changes gears fine and no noises but it's different.) I have read a few posts online about how and no posts about whether or not you should if it has never been changed. Any experience out there on this one? Thanks!