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Old Jul 29, 2006 | 12:24 PM
  #1  
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From: Yacolt, Washington
Transmission Service Question

Trying to save time I had my tranny fluid changed at the local NAPA auto care center, they attached a device into the fluid line that removes and replaces the fluid without the need to drain the old fluid from the tranny and the torque converter, therefore they didn't drop the pan and change the filter.
Anyone heard of this method? How important is changing out the filter? Also, I made a comment about using Mercon not Mercon V, I was told they used a Multi-Vehicle ATF (ATF4).
Thanks for any answers/opinions
 
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Old Jul 29, 2006 | 12:59 PM
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What year truck and which tranny. If it's a torqueshift tranny you have probably got the wrong fluid in it.
 
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Old Jul 29, 2006 | 02:14 PM
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69cj

It's a 4R100 in a 99 F350 PSD, the owners and shop manuals call for Mercon, thats why I raised the question to NAPA on the fluid type they use. I'm looking for some input on this issue just in case......I need to change it out again, have a problem, or heaven forbid go to the stealership and ask them. Wife towed a horse trailer 400 miles without any problems.
 
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Old Jul 29, 2006 | 02:27 PM
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ATF4 is a fluid that is compatible with Dexron 3 and Mercon. It is used mainly because its alot cheaper than the factory fluid and works the same.
 
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Old Jul 29, 2006 | 02:34 PM
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Thanks Schmid
 
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