My 2014 Camry is at 121k miles. It’s never had a trans fluid change or drain and fill before. I’m told with higher mileage do NOT flush and most shops know this. I’m told the drain and fill is good preventative maintenance. I’m also doing sparks plugs. They were done last at 77k. Just trying to get up to date on this car. Should have them check all fluid levels such as coolant as well? Am I doing too much here? I’m also not seeing anything in the manual with my Camry that talks about a trans fluid change.