2009 Mustang 4.0 Tremec fluid

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Dec 24, 2013
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Dingmans Ferry, PA
I would like to change mine, only 36K, but only 1K is mine, who knows. I like Pennzoil full synthetic products. recommended fluid? Also want to do rear diff. Any tips/experience appreciated. Mike B
 
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Aug 14, 2010
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Here is a list of the most current manual transmission fluids listed by viscosity. http://www.bobistheoilguy.com/forums/ubbthreads.php/topics/1231182/3 You want to find out what the viscosity of the oem fluid is and match it here, and possibly go up or down depending on how if shifts.
Originally Posted By: MolaKule
Manual Transmission Fluids (MTL) Fluids containing MTL Application Specific Additive Packages with GL-4 Ratings Choosing a Manual Transmission fluid can be confusing. Many times there is simply a specification referenced and no information about the viscosity of a fluid at 100C, where the oil viscosity is documented at the higher testing temperature. What I recommend you do when looking for a replacement fluid is to determine the viscosity of the fluid at 100C either from the manufacturer's Product Data Sheet or from a New oil Analysis or VOA. After knowing the viscosity at 100C (212F), one can then attempt to match up the fluid to one or more of those below: A. The four MTL fluids closest to a Kinematic Viscosity of 6.1 (About the same viscosity as a DexronVI) or so are: 1. Castrol Syntrans FE 75W, 2. BMW (Pentosin) MTF-LT-3, 3. Honda MTII or MTF 2. 4. Ford FML-XT-11-QDC B. The next higher viscosity MTL would be the 7.5 cSt versions (About the same viscosity as a DexronIII) 1. Royal Purple's Synchromax 2. Ravenol MTF-2 3. Honda MTF 4. VW part number G052512A2 5. GM Manual Transmission and Transfer Case Fluid 6. BMW (Pentosin MTF 2) MTF-LT-1, 2 C. The next higher viscosity MTL would be Castrol Syntrans V FE 75W-80 8.0cSt D. The next higher viscosity MTL would be BG Synchroshift II 8.2 cSt E. The next higher viscosity is Mopar Type MS-9417 MTL 9.0cSt F. Valvoline MTF Part Number 811095 9.2 cSt G. The next higher viscosity MTL would be Pennzoil Synchromesh 9.3 cSt H. The next group of MTL’s are in the 10.x cSt range are: 1. Redline MTL 75W80 2. Amsoil MTL 3. GM Synchromesh’s 4. Volvo MTF 645 5. Fuchs TITAN SINTOFLUID SAE 75W-80 synthetic MTF (Carries a GL-5 rating as well) 6. Lodexol (Morris Lubricants) MTF I. The next higher viscosity MTL would be: 1. Redline MT-85 – 12.0 cSt J. The next higher viscosity MTLs in the 14-15 cSt (75W90) range would be: 1. Amsoil MTG 2. Redline MT-90 3. Castrol Syntrans Multivehicle 75W-90 4. Castrol Syntrans Transaxle 75w-90 5. Ford XT-75W90-QGT (Carries a GL-5 rating as well) 6. Ford MOTORCRAFT® Full Synthetic Manual Transmission Fluid XT-M5-QS
 
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The recommended Manual trans fluid is Mercon V, however most owners claim it leads to notchy shifting due to the low viscosity, and prefer syncromesh fluids (Amsoil, royal purple, pennzoil, and Redline make these). Regarding the rear diff, I've had great results with M1 75w140. Hope this helps, good luck!
 
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B. The next higher viscosity MTL would be the 7.5 cSt versions (About the same viscosity as a DexronIII) 1. Royal Purple's Synchromax 2. Ravenol MTF-2 3. Honda MTF 4. VW part number G052512A2 5. GM Manual Transmission and Transfer Case Fluid 6. BMW (Pentosin MTF 2) MTF-LT-1, 2 Any of those should work great in the transmission. For the diff i would use Amsoil severe gear 75w-140 or Redline 75w-140. Also if you have the LSD, there is a note. Traction-Lok axles add 4oz of friction modifier Ford part No XL-3 or equivalent formulated to meet Ford spec EST-M2C118-A. http://www.amsoil.com/mygarage/vehiclelookup.aspx?url2=2009+FORD+MUSTANG+H
 
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ATF+4, any MerconV, Mobil1 ATF, Redline D4, Amsoil ATD... are some options. BG Syncroshift II, Wynns MTF, Amsoil MTF, Torco MTF, Royalpurple Synchromax... are some options. Honda MTF and BOT303(Chevy Cruz) are options for your mild weather.
 

Skeet6

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Joined
Dec 24, 2013
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126
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Dingmans Ferry, PA
I bought the Pennzoil Multi-ATF which covers Mercon V. Hope it's OK. Will be doing it soon, I am going to install a Hurst/Ford Racing short throw shifter soon, too. Mike B
 
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