This is an awesome article about sealed transmissions and fluid, yet people are talking about changing oil, lol come on there are plenty of articles on that. I haven’t found any good advice on sealed trans until I talked to a chrysler guy today then happened to stumble on this.
Sealed transmission do not need the fluid changed unless you’re towing or change it every 60k. Even if the fluid is a little dirty, that’s all the more reason not to change. It means the trans has settled in and somehow it uses the contamination to fill.. something idk.
I drive a dodge magnum, 160k, has sealed trans and hasn’t given me one problem. I was trying to figure out if I should change it or not but the chrysler guy and this article gives good reasons not to. I was very glad to stumble across this
I spent 25 years developing HD automatics at Allison.
Fresh fluid is always your friend.
I will agree it’s important that it be done correctly.
We referred to the typical dealer transmission flush as “wallet flush”