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Will Synthetic Tranny fluid make a diff??

  • Thread starter Thread starter 2003BlackStang
  • Start date Start date May 5, 2004
2

2003BlackStang

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Nov 11, 2003
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May 5, 2004
#1
  • May 5, 2004
  • #1
Will synthetic transmission fluid make a big difference and what kind should i use?
 

LouisianaZJ

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Feb 13, 2004
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May 5, 2004
#2
  • May 5, 2004
  • #2
this is what someone told me, not sure how it actually works in the tranny

"One thing you need to know is that Red Line D4 ATF (Mercon V) is not good for your T-3650 tranny. The synchro rings are carbon fiber, and RL makes these rings brittle. I know it's wierd, but a lot of teh Mustang folks on www.mustangworld.com are using GM Synchromesh manual transmission fluid in their T-3650 trannys. GM Synchromesh takes the characteristic 1-2 shift grind out of the picture completely. Don't use Red Line in the T-3650 tranny."
 

wms004

Founding Member
Jan 15, 2002
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May 5, 2004
#3
  • May 5, 2004
  • #3
I've had the RL D4 ATF in there for over 5,000 miles. Can anyone back up the statement above? How much and where to get GM Syncromesh?
 

Graham052

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May 7, 2003
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May 5, 2004
#4
  • May 5, 2004
  • #4
Ive had redline in mine now for awhile too, and would like to know more info. Is it the same for my transmission in my 96?
 

Turbo92PGT

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Feb 17, 2003
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May 5, 2004
#5
  • May 5, 2004
  • #5
I've had redline in my T45 for a while now. Its not that great =/ I liked using maxlife and lucas oil stabilizer better.

Your 96 has the T45 transmission
 
G

Ghost001

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Dec 9, 2002
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May 5, 2004
#6
  • May 5, 2004
  • #6
I think it's a good idea for an auto tranny. I put Amsoil synthetci ATF in my Stang about a year ago, when it had 15,000 miles on it. It now has 36,000 miles on it, and I've never had a single problem.

Amsoil is good, because it does not break down as easily at high temperatures.

I just changed the tranny fluid again a couple of weeks ago, and the old Amsoil fluid looked pretty good, still red, and not brown.

I'd guess I'd stay away from Redline, if what that person above said is true.
 
2

2003BlackStang

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#7
  • May 7, 2004
  • #7
Anyone got more info on GM synchromesh? Or what they use my car is an 03 5 speed?
 
2

2003BlackStang

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#8
  • May 7, 2004
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Another thread stated that ford puts MOBIL 1 synthetic in stock is this stuff just crap or is that guy wrong? What should I use and how much any info to help me will be appreciated. Ford is hooking me up with a new tranny and i want to change the fluid first thing so the prob wont happen with this tranny. Thanks for your advice in advance anything will be nice.
 
2

2003BlackStang

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#9
  • May 7, 2004
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ANYONE???????????????
 

wms004

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May 7, 2004
#10
  • May 7, 2004
  • #10
2003BlackStang said:
Another thread stated that ford puts MOBIL 1 synthetic in stock is this stuff just crap or is that guy wrong? What should I use and how much any info to help me will be appreciated. Ford is hooking me up with a new tranny and i want to change the fluid first thing so the prob wont happen with this tranny. Thanks for your advice in advance anything will be nice.
Click to expand...
I am that guy. Look at your manual.. it says in the back, Mobile 1 ATF
 
2

2003BlackStang

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May 10, 2004
#11
  • May 10, 2004
  • #11
Can anyone tell me what I should use?? I am confused
 

wms004

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Jan 15, 2002
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May 10, 2004
#12
  • May 10, 2004
  • #12
2003BlackStang said:
Can anyone tell me what I should use?? I am confused
Click to expand...
GM syncromesh
 
2

2003BlackStang

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#13
  • May 11, 2004
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thanks
 

wms004

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May 11, 2004
#14
  • May 11, 2004
  • #14
2003BlackStang said:
thanks
Click to expand...
I've heard you want to use a non-synthetic Dexron III.. and i believe GM syncromesh was recommended.. Check on the bottle though, to be sure. There are other Dexron III's out there that are cheaper.

-wade
 
D

DRPURTOP

New Member
May 11, 2004
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May 11, 2004
#15
  • May 11, 2004
  • #15
Tranny fluid

wms004 said:
I've heard you want to use a non-synthetic Dexron III.. and i believe GM syncromesh was recommended.. Check on the bottle though, to be sure. There are other Dexron III's out there that are cheaper.

-wade
Click to expand...

What does everyone here use in their T45's and how do you like it?
 

Blev

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Aug 17, 2003
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May 11, 2004
#16
  • May 11, 2004
  • #16
I use Royal Purple ATF and I don't have any problems.
 

wms004

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May 12, 2004
#17
  • May 12, 2004
  • #17
Blev said:
I use Royal Purple ATF and I don't have any problems.
Click to expand...
I don't have any "problems" either.. but problems now vs. problems you could be creating in the long run are two different things. For those with the Tremec 3650 tranny, using a synthetic as I am right now, I don't have any problems.. but if peoples' rumors from tremec are correct about using synthetics, we could see problems.
 
2

2003BlackStang

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May 12, 2004
#18
  • May 12, 2004
  • #18
People were telling me the dexron III causes problems thats when they recommended GM Syncromesh. I figured GM Syncromesh is in a Z06 it must be good stuff. Anymore info on would be good thx
 

85mcLaren

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Feb 26, 2004
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Jun 6, 2004
#19
  • Jun 6, 2004
  • #19
difference?

Depends on indivdual trans. Supposingly T-5s, etc. aren't suppose to use anything synthetic. It "messes" up the syncro blocker rings. I have used it in some of my T-5s and have no problem. I, however, have one now that is scraping already - only after a year old and have been told to get that synthetic fluid out of their as soon as possible. Seems to be the luck of the draw.

Jason
 
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