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Mercon ATF

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Old Oct 16, 2006 | 11:46 AM
  #1  
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Unhappy Mercon ATF

I had my wife's '00 Taurus in to the dealership for a Tranny flush 2 days ago and was told that Ford recently issued a statement telling the dealerships to us Mercon V - exclusively! That is; to use it in place of Mercon and Mercon III in all applications. Does this sound right? Has anyone else heard this? My Expy calls for Mercon III, so should I use Mercon V?
 
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Old Oct 16, 2006 | 02:55 PM
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It's true, and according to Ford, yes, you should use Mercon V. I'll try and find a link to the TSB and post back.
 
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Old Oct 16, 2006 | 03:09 PM
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On second thought, Please refer to the chart in the TSB linked here:

http://www.v8sho.com/SHO/TSB01157ATFUsageChart.htm
 
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Old Oct 16, 2006 | 10:46 PM
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Originally Posted by heterodox1
I had my wife's '00 Taurus in to the dealership for a Tranny flush 2 days ago and was told that Ford recently issued a statement telling the dealerships to us Mercon V - exclusively! That is; to use it in place of Mercon and Mercon III in all applications. Does this sound right? Has anyone else heard this? My Expy calls for Mercon III, so should I use Mercon V?
This is correct. All previous fluid recommendations for transmission previously specified as Mercon (no such thing as Mercon III) have been superceded.

See https://www.ford-trucks.com/forums/5...ghlight=mercon

The TSB at the V8SHO site has specifically been superceded by the now one.

Steve
 

Last edited by projectSHO89; Oct 16, 2006 at 10:50 PM.
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Old Oct 17, 2006 | 08:39 PM
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projectSHO89, thanks so much for the information that you provide. I stole the link from the thread that you mentioned. Hopefully this will come in handy for somebody:

http://cerberus.cowgod.org/tsb06-14-04.pdf
 
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Old Oct 17, 2006 | 09:37 PM
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This is interesting development. I remember reading about members in this forum panicking and demanding from dealership service shops to flush Mercon V out of their trannies upon learning that V was used when the dipstick and manual calls for just plain Mercon. And there were lots of talk regarding this subject in this forum, how V can mess up your tranny, yadiyadiya. So what now? Should I go V or use Mobil 1 synthetic (which is Mercon) as I planned next time I flush my tranny, since my dipstick and my manual call for Mercon .
 
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Old Oct 23, 2006 | 12:47 PM
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Thanks for the info guys! The TSB says you can now use dual use fluid (MERCON/MERCON V), even though the manual says: "Using the dual use fluid will cause a hail of hell-fire to rain upon you" (or something like that). It sounds like a go-ahead to use Amsoil, Mobil I or whatever to me...
 
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Old Oct 23, 2006 | 01:22 PM
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I don't know about you guys, but I am just gonna stick with Mercon if it calls for Mercon and Mercon V if it calls for Mercon V.
 
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Old Oct 23, 2006 | 08:52 PM
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Mercon V is more resistant to flash (burning), which causes transmission shudder. From what I've read, that's pretty much the reason for the change.
 
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