automatic transmission flush
I'm due the 90,000 service on my 2011 F350 diesel. The dealer is recommending a transmission flush. Is this worth it, or are they just trying to make a boat payment?
Forum Discussion
gkainz wrote:
transmission experts I know say "DO NOT FLUSH!" ... drain the pan, change the filter. If you want the TC fluid changed, remove the output line to the trans cooler and idle the engine. As the old fluid pumps out, add the same amount into the fill port. Once you have clean fluid pumping out, stop, shut down, reconnect, restart, check and set proper fluid levels.
That's what I do. I use a bucket with quart markings and pour at the same rate of pumping. With the ATF+4 that I use it doesn't change color or gets that normal burnt smell. So I just buy enough fluid for the listed capacity and run it all through.
