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Old Jan 3, 2009 | 08:39 AM
  #1  
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mattman1984
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Tranny Service

I have a 96 F350 5spd. What kind of tranmission fluid does that call for and what is a good additive, I have a weak syncro at 3rd gear? I changed the fluid yesterday but it has gotten worse, and now it grinds into 3rd and 4th..I need to get the right fluid in there.

Thanks

Matt
 
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Old Jan 3, 2009 | 08:59 AM
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From: Ft Scott
The manual calls for synthetic ATF but Redline MTL works real well with bad syncros. And if you pull the shift tower and overfill it by 1 quart that works even better.


Red Line Oil: Gear Lubricants
 
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Old Jan 3, 2009 | 09:01 AM
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It should take mercon ATF. not sure on what additive will help.
 
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Old Jan 3, 2009 | 09:31 AM
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What do you guys suggest, only third gear grinds about every 10th shift. My mechanic drained the tranny yesterday but only about 4 quarts came out, he refilled with some synthetic, not it grinds sometimes in 3rd and 4th.

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Old Jan 3, 2009 | 09:43 AM
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I would do what BlueMule said. Get the redline stuff and fill till its full then pull the shifter and add one more quart.
 
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Old Jan 3, 2009 | 03:29 PM
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So, is the one-quart overfill trick useful for trannies that are presently in good health?
 
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Old Jan 3, 2009 | 03:53 PM
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From: Ft Scott
A lot of guys overfill it to quiet the gear rollover noise that comes with a single mass flywheel.
 
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