View Poll Results: Which fluid is best for a M12 T56?
Redline D4 ATF
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53
8.85%
Royal Purple Syncromax
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179
29.88%
GM Syncromesh
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154
25.71%
OEM Dexron III ATF
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213
35.56%
Voters: 599. You may not vote on this poll
Which T56 fluid?
#101
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From all info I've been able to glean on the 'net, 98-00 F-body T-56's had paperlined blocker rings, while 01+ F-body T-56's had carbon blocker rings.
Chuck
Chuck
#102
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I changed my fluid with dextron 3 and 1 quart of Lucas trans fix . At first that **** was hard as hell to shift. I drove the car one night to work just so when I got home it would be warm enough for that thick mollassis to drain and planned on getting it out of my transmission. By the time I got home the next morning, It blended in with the rest of the dextron and now it shifts like there is nothing in its way. VERY smooth.
I am glad that I drove it to get it warm as I would have drained it without seeing how good it turned out.
I am glad that I drove it to get it warm as I would have drained it without seeing how good it turned out.
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Originally Posted by tici
It's now the second week that have the GM Synchromesh.
Cold start ups are a pain (30F and lower): shifting 1 to 2 takes a lot. 1 to 3 goes better. Once it's warmed up it's better. In general it's smoother, but I don't know if this oil is the good one for winter.
Cold start ups are a pain (30F and lower): shifting 1 to 2 takes a lot. 1 to 3 goes better. Once it's warmed up it's better. In general it's smoother, but I don't know if this oil is the good one for winter.
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I changed to Royal Purple right after I got the car, June 3K miles ago. I noticed shifting getting harder. This weekend I put in OEM Dexron III and I feel it shifts much smoother/earier now. Hope it lasts.
#108
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Originally Posted by AINT SKEERED
I changed my fluid with dextron 3 and 1 quart of Lucas trans fix . At first that **** was hard as hell to shift. I drove the car one night to work just so when I got home it would be warm enough for that thick mollassis to drain and planned on getting it out of my transmission. By the time I got home the next morning, It blended in with the rest of the dextron and now it shifts like there is nothing in its way. VERY smooth.
I am glad that I drove it to get it warm as I would have drained it without seeing how good it turned out.
I am glad that I drove it to get it warm as I would have drained it without seeing how good it turned out.
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#114
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Originally Posted by tici
It would be interesting to try other cars that have the same tranny and compare.
How does a Mustang shift? Do they have the same T56?
Some Aston Martin have it too, but I guess they won't let me try one...![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
Or maybe yes, I could at least try...
How does a Mustang shift? Do they have the same T56?
Some Aston Martin have it too, but I guess they won't let me try one...
![Winky](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_wink.gif)
Or maybe yes, I could at least try...
mustangs have 5 speeds, so your next closest bet would be a vette or viper as they both use t 56.
I think an 03/04 cobra also is 5 speed.
#115
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The Aston Martin use a electronicly-activated shift lever... so you won't be getting a "feel" for much of hte shifting. ![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
The Viper uses a different shift location/linkage so it actually may feel a bit different than the F-body. The Vette has 3-cone syncros in 3rd and 4th gears so shifting at high RPMS will be easier/quicker in the vette transaxle.
Likewise, you could convert the T56 syncromesh design to a Proshift or Faceplating dog-style shifting through Liberty's Gears if you dont' mind double-clutching.![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
For the ultimate T56 shift kit, I'm hoping to see one of these some day: www.zeroshift.com INSTANT gear changes. :o
![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
The Viper uses a different shift location/linkage so it actually may feel a bit different than the F-body. The Vette has 3-cone syncros in 3rd and 4th gears so shifting at high RPMS will be easier/quicker in the vette transaxle.
Likewise, you could convert the T56 syncromesh design to a Proshift or Faceplating dog-style shifting through Liberty's Gears if you dont' mind double-clutching.
![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
For the ultimate T56 shift kit, I'm hoping to see one of these some day: www.zeroshift.com INSTANT gear changes. :o
#116
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Originally Posted by 2000 Tran Zam
mustangs have 5 speeds, so your next closest bet would be a vette or viper as they both use t 56.
I think an 03/04 cobra also is 5 speed.
I think an 03/04 cobra also is 5 speed.
03/04s have T56 6-speeds, as will the upcomming 07 Shelby GT500.
As for what fluid, I have no F'n idea whats in my car. But I think the general concensus is...try it, and see how you like it lol.
#118
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After 200 miles with GM Synchromesh I went back to a mineral Dexron III (I kept the Synchtomesh... just in case!).
Shifting is as as smooth as before, but I can shift faster!
The Synchromesh is not bad at all, but it has to get warm to shift in a proper manner: in winter this can take 1/2 hour.
In the cold mornings it's a pain to shift using Syncromesh and I was tired of that.
...back to the rooths...!
Shifting is as as smooth as before, but I can shift faster!
The Synchromesh is not bad at all, but it has to get warm to shift in a proper manner: in winter this can take 1/2 hour.
In the cold mornings it's a pain to shift using Syncromesh and I was tired of that.
...back to the rooths...!
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Originally Posted by Armageddon
what do you guys think about the Lucas Oil Stabilizer as a 100% fill? They recommend it.
Not as a complete fill, but an add. I'm redoing my cluctha, and might as well redo the fluid also (90k+)
Going to use dino DexIII, but what about the Lucas s a quart add-in?
I've used it in a few autos, and it's great!