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
Simple drain and refill is sufficient enough. My ford tranny has a drain plug, which makes it an easy task. There's no reason to drop the pan unless you're changing the filter. At 90K miles, there's no need to change the filter. Drain into a bucket with graduated markings on it, then replace whatever drained out. You won't get fluid from the tourgqe converter or the cooler (if you have one), so repeat the process again in 25K miles, and make that your normal fluid change interval. For me, that's about once a year in my HD truck, which is not burdensome at all. Trans fluid is the lifeblood of tranny, and it ought to be respected.
On a different note, unless Ford has changed their tune, they used to recommend never changing the rear differential fluid. I think that's quite foolish, but still, with synthetic fluid in the differential, you should be good for 200K miles.
On a different note, unless Ford has changed their tune, they used to recommend never changing the rear differential fluid. I think that's quite foolish, but still, with synthetic fluid in the differential, you should be good for 200K miles.
