I currently have 130k miles on my Rav4 2003 4WD. I do regular maintenance, do oil change every 3k or less. Do you recommend flushing or changing fluid on trans and diff? I just checked the trans fluid its still pink but its kinda dirty but its on good condition. Would you recommend doing it? A friend of mine works on a trans shop but he told me not to do anything if you don't notice anything wrong it might slip if you do it. I want to do it because its part of the maintenance especially I've heard transmission problem with Rav4 so I'm basically doing a preventive maintenance i want to have it till 200k miles. Any suggestions would be appreciated! Thanks!