I sensed some confusion regarding this topic so I thought I would post this.
Mark is a retired Ford Tranny Engineer and I trust his advise.

Rog


<table class="tborder" id="post8093788" width="100%" align="center" border="0" cellpadding="6" cellspacing="1"><tbody><tr><td class="thead"> 10-31-2009, 07:28 PM <!-- / status icon and date -->
</td> </tr> <tr> <td class="alt2" style="padding: 0px;"> <!-- user info --> <table width="100%" border="0" cellpadding="0" cellspacing="6"> <tbody><tr> <td class="alt2"></td> <td nowrap="nowrap"> Mark Kovalsky <!-- BEGIN TEMPLATE: postbit_onlinestatus --> <!-- END TEMPLATE: postbit_onlinestatus --> ******** type="text/javascript"> vbmenu_register("postmenu_8093788", true); *********>
Former Ford AutoTrans Eng
</td> <td width="100%"> </td> <td valign="top" nowrap="nowrap"> Join Date: Aug 1999
Location: Central Florida
Posts: 3,611
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</td> </tr> </tbody></table> <!-- / user info --> </td> </tr> <tr> <td class="alt1" id="td_post_8093788"> <!-- message, attachments, sig --> <!-- message --> <!-- BEGIN TEMPLATE: bbcode_quote --> Quote:
<table width="100%" border="0" cellpadding="6" cellspacing="0"> <tbody><tr> <td class="alt2" style="border: 1px inset ;"> Originally Posted by triskadek
I gather the supposed difference between <vb_highlight>mercon</vb_highlight> and <vb_highlight>mercon</vb_highlight> V is V is a full synth.
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<!-- END TEMPLATE: bbcode_quote -->No, that's not right.

You could get <vb_highlight>MERCON</vb_highlight> in dino, blend, or full synthetic. Now you can get <vb_highlight>MERCON</vb_highlight> V in dino, blend, or full synthetic.

The difference is in anti-shudder additives.

<vb_highlight>MERCON</vb_highlight> V is now compatible with ALL transmissions that used to use <vb_highlight>MERCON</vb_highlight>, including the E4OD.
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Mark

Former Ford automatic transmission engineer, 1988-2007.
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trust mark
they make the tranny fluids with different abrasive qualitys for certain applications and like he pointed out the shutter guards that they blend in, each company test these thing and some times it takes a while to get results from each tranny application, so u will see these products come out then shortly after they will say they replace other applications if that makes any sence to you