Flushing Auto Trans
Technical Article Contributor
Joined: May 2004
Posts: 6,509
Likes: 6
From: Georgia on my mind...
Welcome to F150online.com 
On my personal vehicles, I go every 30K for flushes with a new filter. I've got access to a flush machine myself, so I can dictate what I want to do and how to do it though.
On my personal vehicles, I go every 30K for flushes with a new filter. I've got access to a flush machine myself, so I can dictate what I want to do and how to do it though.
Senior Member
Joined: Dec 2004
Posts: 114
Likes: 1
From: Rogers, AR
Generally the recommendation is every 30k, with or without the cooler. Make sure you use a very reputable shop if you are not taking it to Ford. And by all means make sure that if your tranny calls for Mercon V, they do not use regular Mercon and add extra crap to it; they will claim it has the same "qualities" as Mercon V. That's BS! Do it right the first time, you won't be sorry.
All the best!
All the best!