Originally Posted by entryspeed

How often do you guys on average change tranny fluid out, I mean the factory recommended service intervals end at around 150k mile correct. I dont know I dont have an owners manual. Also I aggree with the t-iv fluid just in the fact that just as t-iv is old technology so are our trannies they where made in the time of t-iv and are still spec'd for it unless you rebuilt your tranny and upgraded to todays specs.