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2012-2013 Boss 302 Mustang
Trans Issues.....
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<blockquote data-quote="UnleashedBeast" data-source="post: 10990745" data-attributes="member: 112023"><p>I have experience with many fluid swaps with even cheap Pennzoil synchromesh users that will disagree with you. This is excellent advice. </p><p></p><p></p><p></p><p>WOW! Where are you getting your information? The TSB fluid has the viscosity of a 20 grade engine lubricant. That is no where near a 75W-90 gear lube. </p><p></p><p>Here is a UOA of Ford's OEM QMS Getrag lube. After 6,000 miles, it had the sheared viscosity of a very heavy 30 grade lubricant (12.4 cSt @100*C). </p><p></p><p><a href="http://imageshack.us/photo/my-images/18/uoamt82oemfluid.jpg/" target="_blank"><img src="http://img18.imageshack.us/img18/4441/uoamt82oemfluid.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p></p><p>Here is a VOA from the TSB replacement DCT fluid from Ford. It has the virgin viscosity of a very light 20 grade lubricant (6.28 cSt @ 100*C)</p><p></p><p><a href="http://imageshack.us/photo/my-images/577/voamotorcraftdualclutch.jpg/" target="_blank"><img src="http://img577.imageshack.us/img577/411/voamotorcraftdualclutch.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a></p><p></p><p>To be the viscosity of 75W-90 gear oil would required a cSt viscosity of 13.99 to 23.99. Just for reference....most 75W-90 gear lubes will be closer to 16.9-18.9. Royal Purple 75W-90 has is 17.5 cSt @ 100*C. </p><p></p><p style="margin-left: 20px">Iron 1 </p> <p style="margin-left: 20px">Chromium 0 </p> <p style="margin-left: 20px">Lead 0</p> <p style="margin-left: 20px">Copper 0 </p> <p style="margin-left: 20px">Tin 1 </p> <p style="margin-left: 20px">Aluminum 2</p> <p style="margin-left: 20px">Silver 1 </p> <p style="margin-left: 20px">Boron 238 </p> <p style="margin-left: 20px">Magnesium 1 </p> <p style="margin-left: 20px">Calcium 43 </p> <p style="margin-left: 20px">Phosphorus 2318 </p> <p style="margin-left: 20px">Zinc 3 </p> <p style="margin-left: 20px">Moly 139 </p> <p style="margin-left: 20px"><strong><u>vis @100°C 17.5</u></strong></p><p></p><p><img src="http://www.bobistheoilguy.com/bitogwp/wp-content/uploads/2011/03/visc.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p></p><p></p><p>Congratulations, you are using a fluid that is more viscous than the initial factory fill. You have better results because you are using a fluid with superior base stocks with an abundance of "slippery" friction modifiers, and the barton shifter bracket has eliminated remote shifter bind. Just wait until this hot summer weather is over, and let's see how much you boast about the heavy gear oil you have in your transmission. It may be great in the heat...but the cold weather is coming.</p><p></p><p>True synthetic synchromesh formulations are the perfect compromise between too viscosity that not will hinder cold weather operation, will minimizing gear noise that is inherent of the getrag design chosen by Ford, and will provide grind free operation with maximum wear prevention. They are about 9.5-10.5 cSt @ 100*C, heavier than the TSB lube, but lighter than the OEM spec'd lube.</p></blockquote><p></p>
[QUOTE="UnleashedBeast, post: 10990745, member: 112023"] I have experience with many fluid swaps with even cheap Pennzoil synchromesh users that will disagree with you. This is excellent advice. WOW! Where are you getting your information? The TSB fluid has the viscosity of a 20 grade engine lubricant. That is no where near a 75W-90 gear lube. Here is a UOA of Ford's OEM QMS Getrag lube. After 6,000 miles, it had the sheared viscosity of a very heavy 30 grade lubricant (12.4 cSt @100*C). [URL=http://imageshack.us/photo/my-images/18/uoamt82oemfluid.jpg/][IMG]http://img18.imageshack.us/img18/4441/uoamt82oemfluid.jpg[/IMG][/URL] Here is a VOA from the TSB replacement DCT fluid from Ford. It has the virgin viscosity of a very light 20 grade lubricant (6.28 cSt @ 100*C) [URL=http://imageshack.us/photo/my-images/577/voamotorcraftdualclutch.jpg/][IMG]http://img577.imageshack.us/img577/411/voamotorcraftdualclutch.jpg[/IMG][/URL] To be the viscosity of 75W-90 gear oil would required a cSt viscosity of 13.99 to 23.99. Just for reference....most 75W-90 gear lubes will be closer to 16.9-18.9. Royal Purple 75W-90 has is 17.5 cSt @ 100*C. [INDENT]Iron 1 Chromium 0 Lead 0 Copper 0 Tin 1 Aluminum 2 Silver 1 Boron 238 Magnesium 1 Calcium 43 Phosphorus 2318 Zinc 3 Moly 139 [B][U]vis @100°C 17.5[/U][/B][/INDENT] [IMG]http://www.bobistheoilguy.com/bitogwp/wp-content/uploads/2011/03/visc.jpg[/IMG] Congratulations, you are using a fluid that is more viscous than the initial factory fill. You have better results because you are using a fluid with superior base stocks with an abundance of "slippery" friction modifiers, and the barton shifter bracket has eliminated remote shifter bind. Just wait until this hot summer weather is over, and let's see how much you boast about the heavy gear oil you have in your transmission. It may be great in the heat...but the cold weather is coming. True synthetic synchromesh formulations are the perfect compromise between too viscosity that not will hinder cold weather operation, will minimizing gear noise that is inherent of the getrag design chosen by Ford, and will provide grind free operation with maximum wear prevention. They are about 9.5-10.5 cSt @ 100*C, heavier than the TSB lube, but lighter than the OEM spec'd lube. [/QUOTE]
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