Trans Flush worth doing? - Ford Powerstroke Diesel Forum
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Old 05-09-2009, 01:33 PM
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Trans Flush worth doing?

Is the flush from the dealer worth doing? Or should I just drain the pan and change the inline filter and the one in the pan? I dont know the last time it was flushed so? After I get studs done I was wondering if I should go ahead and do this to since I am doing everything else
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Old 05-09-2009, 01:37 PM
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oh yea I have like 101K on it
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Old 05-09-2009, 02:07 PM
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This has been discussed a lot, but to help you out. YES it is worth doing, and is recommended by the factory every 30,000 miles. Ford uses a special machine that flushes ALL the old tranny fluid out through the trans cooler lines...the unit takes about 18 quarts of MERCON SP to refill after a flush.

You can drain the pan yourself and change the IN-LINE tranny filter on the passenger side (looks like a roll of TP), and refill at the filler with about 7.5 quarts of MERCON SP. But keep in mind if you do this process your only changing abou 45% of the tranny fluid because there is still about 9 quarts of tranny fluid in the torque converter. So you will be mixing old fluid with new fluid.

On the torque-shift 5R110 tranny behind the 6.0 powerstrokes and 6.4s the torque converter is "sealed" in relative terms and there is no drain for the torque converter, this is why to get all the oil out you have to flush it. These trannys are expensive and about $3800 to replace, so take it to the Ford dealer...prices are anywhere from $175-$325 for a full system flush, refill and changing the external inline filter. I paid $205 to have mine done @ a Ford dealership in Tampa, FL

Per Ford the screen filter in the trans pan DOES NOT need to be changed, only the EXTERNAL IN-LINE filer on the passenger side needs to be changed every 30,000 miles.

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Old 05-09-2009, 02:34 PM
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i read a few posts that said flushing was very hard on these tranny's, and to just change the fluid, and filter. dont know how true that is, but i always thought it was better to get the crap out of the converter, and modulator valve. i would get advice from some tech's on here before i do anything, mine needs done too, and i would like to run amsoil in mine.
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Old 05-09-2009, 05:05 PM
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the machine really aint that special we got one at the begining the year in my high school auto mechanics class.
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Old 05-09-2009, 05:42 PM
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The heated flush should get essentially all of the old fluid out. The pan drain will not. Ford says either is acceptable at 30k. I opted for the flush when I hit 30k. I am at 46k and no issues. My opinion is that any fear about flushing is unfounded. I might think differently if I were at 100k and considering the flush for the first time.
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Old 05-10-2009, 02:26 AM
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Amzoil has removed their claim their oil are rated for MERCON SP.
Amzoil old data sheet: http://www.amsoil.com/news/atf.pdf
New web page: AMSOIL - Synthetic Universal Automatic Transmission Fluid (ATF)

It's your tranny, Mercon SP is like $5 a quart through my dealer so I'll support my parts counter.
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Old 05-10-2009, 04:09 AM
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Quote:
Originally Posted by HeavyAssault View Post
Amzoil has removed their claim their oil are rated for MERCON SP.
Amzoil old data sheet: http://www.amsoil.com/news/atf.pdf
New web page: AMSOIL - Synthetic Universal Automatic Transmission Fluid (ATF)

It's your tranny, Mercon SP is like $5 a quart through my dealer so I'll support my parts counter.
Very nice post. Thanks for the information!
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Old 05-11-2009, 07:48 AM
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i had an oil analysis technician at caterpillar tell me to just change th fluid myself, he said the old and new fluid mixing isnt going to hurt a thing, especially doing so every 30k miles. he claimed SOME of the machines used can blow the seals in the tranny when they are flushing them, i doubt fords do but anywho, this is what he suggested, take it for what its worth.
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Old 05-11-2009, 08:10 AM
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If your gonna do the flush, dont let anyone do but a replicable certified powerstroke Ford dealership. These trannys are too expensive to risk having some fly by night "joe", amaco or whoever work on them. Dont use anything but MERCON SP!!!!!!!!!!!!
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