2008 Scion XB u241e 4 speed auto
I've done two drain and refills with Valvoline Maxlife ATF chasing down a delayed/non engagement of drive. I bought this car new, went to my brother at around 70k or so, now it has 176k. It went to the dealer, they wanted to put in a new transmission. No codes being thrown.
Just did another drain, dropped the pain and put in a new wix filter. Original filter was still in, not sure if a transmission service was ever done on this car when my brother had it. I've been driving it, have put almost 1500 miles on it, it works for the most part. Has not gone into drive a couple times but will eventually catch with a slight rev or waiting a bit.
So long story short three drain and refills, new filter. Drives fine for the most part with the occasional glitch. Have done some research and may be accumulator piston wear.