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Tranny Service?

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Old Sep 9, 2007 | 10:57 AM
  #1  
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Tranny Service?

I have a 99 f-350, 7.3l auto, crewcab, duelly with 235,000 on it. It's way overdue for tranny service. I've been told buy many guys including techs never! to have an auto tranny flushed? it will clean away all the grit from the clutch packs is this true? Also what is the proper fluid to use? and does the tork converter have a drain plug? Thanks Guys
 
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Old Sep 9, 2007 | 05:30 PM
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Have you ever changed the transmission fluid before? What color is your fluid?
Joe
 
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Old Sep 9, 2007 | 05:40 PM
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If that tranny fluid has never been flushed/changed EVER before the DO NOT chang/flush it now cuz it will clean away all the grit from the clutch packs. Then you will need a tranny.
 
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Old Sep 9, 2007 | 07:12 PM
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If the trans is in good shape new fluid can only help it. If the trans is about to die, new fluid won't help save it.

It's a myth that a flush washes away grit that hold an old trans together. There is no truth to that at all.
 
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Old Sep 10, 2007 | 10:49 AM
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Wash the grit from the clutch packs? I'd sure like to have that one explained to me.

I've rebuilt clutch packs (changed the rings and springs) from industrial applications, and any "grit" would impede their operation.

Is there something different about automotive clutch packs that I don't understand? I saw the clutch packs from an AXOD transmission (Taurus/Sable) that failed due to that mis-engineered aluminum oil slinger that it had, and it appeared the same.
 

Last edited by Jim59; Sep 10, 2007 at 10:56 AM.
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Old Sep 10, 2007 | 11:14 AM
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If there is any grit in the fluid, it will be captured by the filter, so the "grit in the clutch packs" is a myth.

Change your fluid. Change your filter.
 
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Old Sep 11, 2007 | 01:37 PM
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Get it flushed, just not by the 'techs' that tell you not to. And a filter change.
 
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Old Sep 11, 2007 | 01:45 PM
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Flush and filter is the way to go.Dumb techs !!
 
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