All,
I have been researching a suitable replacement fluid for use in my Mustang w/ the MT82. Many are aware of the common complain of the shift qualities of these.
I switched to Redline MTL based upon the rave reviews on the car specific forums. However in the previous few weeks its been in the 30s and even 20s here. the shift quality is quite appalling even with the Redline.
So, I turned to this board for more in depth research.
Basically, according to ford the correct fluid is XT-11-QDC
it is listed here
Ford Trans Fluid Chart
within that chart it indicates Ford specification WSD-M2C200-D2
WSD-M2C200-D2
that spec says the viscosities are to be:
Viscosity:
cSt @ 40°C 76.0
cSt @ 100°C 15.4
mPa.s @ -40°C 17,400
Those cSt numbers are quiet high when comparing the available viscosity numbers of the QDC or even QS available on this forum.
A number of times when I've searched for related topics within this forum I see this information from, I believe, MolaKule:
Quote:
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-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. The next higher viscosity MTL would be Pennzoil Synchromesh 9.3 cSt
G. The next group of MTL’s are in the 10.x cSt range are:
1. Redline MTL 70W80.
2. Amsoil MTL
3. GM Synchromeshs’
4. Volvo MTF 645
5. Ford Motor Craft XT-M5-QS
H. The next higher viscosity MTL would be:
1. Redline MT-85 – 12.0 cSt
I. The next higher viscosity MTLs would be:
1. Amsoil MTG 14.5 cSt
2. Redline MT-90 15.6 cSt
3. Castrol Syntrans Multivehicle 75W-90
I *think* i saw an analaysis along the way that confirmed MolaKule's info with QDC cSt in the 6-7 range.
So, given those few data sources, why do you think there appears to be such a large discrepancy in the ford spec, which recommends that fluid and the viscosity suggested on this forum?
I'm looking at a Ford Spec indicating cSt @ 100°C 15.4 vs the forum listed 6-7cSt of the QDC and 11s for the QS (original fill for the '11-'12 cars)
Basically, I see that the Redline is thicker than the QDC, and possibly my trans is finicky enough in the cold to be sensitive to that. However, If I switch to Royal Purple Synchromax I'm moving to a synchromesh fluid that is much closer in viscosity to QDC than the Redline.
Redline is great stuff, it just doesn't seem to be working well in the cold in my car.... and its driving me crazy.
The Royal Purple appears to have the matching viscosity and does have a friction modifier package for the synchro transmissions. So it would seem it may be a good choice. Am I wrong in my conclusion? Even if it was intended for ATF type fill replacements, if it has the correct viscosity and FM's for manual transmissions then it may be a good choice.
I've had a number of GM T56 cars in the past and the RP Synchromesh has worked excellent in those (I never sent any out for analysis, my change intervals are quite frequent) so I'm willing to try it here on the MT82.
I have been researching a suitable replacement fluid for use in my Mustang w/ the MT82. Many are aware of the common complain of the shift qualities of these.
I switched to Redline MTL based upon the rave reviews on the car specific forums. However in the previous few weeks its been in the 30s and even 20s here. the shift quality is quite appalling even with the Redline.
So, I turned to this board for more in depth research.
Basically, according to ford the correct fluid is XT-11-QDC
it is listed here
Ford Trans Fluid Chart
within that chart it indicates Ford specification WSD-M2C200-D2
WSD-M2C200-D2
that spec says the viscosities are to be:
Viscosity:
cSt @ 40°C 76.0
cSt @ 100°C 15.4
mPa.s @ -40°C 17,400
Those cSt numbers are quiet high when comparing the available viscosity numbers of the QDC or even QS available on this forum.
A number of times when I've searched for related topics within this forum I see this information from, I believe, MolaKule:
Quote:
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-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. The next higher viscosity MTL would be Pennzoil Synchromesh 9.3 cSt
G. The next group of MTL’s are in the 10.x cSt range are:
1. Redline MTL 70W80.
2. Amsoil MTL
3. GM Synchromeshs’
4. Volvo MTF 645
5. Ford Motor Craft XT-M5-QS
H. The next higher viscosity MTL would be:
1. Redline MT-85 – 12.0 cSt
I. The next higher viscosity MTLs would be:
1. Amsoil MTG 14.5 cSt
2. Redline MT-90 15.6 cSt
3. Castrol Syntrans Multivehicle 75W-90
I *think* i saw an analaysis along the way that confirmed MolaKule's info with QDC cSt in the 6-7 range.
So, given those few data sources, why do you think there appears to be such a large discrepancy in the ford spec, which recommends that fluid and the viscosity suggested on this forum?
I'm looking at a Ford Spec indicating cSt @ 100°C 15.4 vs the forum listed 6-7cSt of the QDC and 11s for the QS (original fill for the '11-'12 cars)
Basically, I see that the Redline is thicker than the QDC, and possibly my trans is finicky enough in the cold to be sensitive to that. However, If I switch to Royal Purple Synchromax I'm moving to a synchromesh fluid that is much closer in viscosity to QDC than the Redline.
Redline is great stuff, it just doesn't seem to be working well in the cold in my car.... and its driving me crazy.
The Royal Purple appears to have the matching viscosity and does have a friction modifier package for the synchro transmissions. So it would seem it may be a good choice. Am I wrong in my conclusion? Even if it was intended for ATF type fill replacements, if it has the correct viscosity and FM's for manual transmissions then it may be a good choice.
I've had a number of GM T56 cars in the past and the RP Synchromesh has worked excellent in those (I never sent any out for analysis, my change intervals are quite frequent) so I'm willing to try it here on the MT82.
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