View Poll Results: Which fluid is best for a M12 T56?
Redline D4 ATF
![](https://ls1tech.com/forums/images/polls/bar2-l.gif)
![](https://ls1tech.com/forums/images/polls/bar2.gif)
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53
8.85%
Royal Purple Syncromax
![](https://ls1tech.com/forums/images/polls/bar3-l.gif)
![](https://ls1tech.com/forums/images/polls/bar3.gif)
![](https://ls1tech.com/forums/images/polls/bar3-r.gif)
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179
29.88%
GM Syncromesh
![](https://ls1tech.com/forums/images/polls/bar4-l.gif)
![](https://ls1tech.com/forums/images/polls/bar4.gif)
![](https://ls1tech.com/forums/images/polls/bar4-r.gif)
![](https://ls1tech.com/forums/clear.gif)
154
25.71%
OEM Dexron III ATF
![](https://ls1tech.com/forums/images/polls/bar5-l.gif)
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213
35.56%
Voters: 599. You may not vote on this poll
Which T56 fluid?
#241
Kleeborp the Moderator™
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Originally Posted by dailydriver
Yeah, that's why most will tell us to steer clear of the Redline D4, with it's "up to" ~50% ester base stocks. I'll have to grill Torco and try to find out just how much % ester bases they use. I just hope they don't give me the "propriatary, restricted info" answer that sooo many other "boutique oil" companies seem to give to contents questions. BTW; do you have any idea when SF will be back on line taking orders??
So far though, the Torco is by far my favorite transmission oil. I will give SF another shot in my transmission since I only used it on this one to break it in.
#244
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Originally Posted by MeentSS02
So far though, the Torco is by far my favorite transmission oil. I will give SF another shot in my transmission since I only used it on this one to break it in.
How has the Torco been holding up for you?
Is this the stuff?
http://www.torcoracingoils.com/produ...1-6cfe55e60a47
I plan to use their gear oil in my 12 bolt and figured I would give their ATF a shot in the T56 as well so I can order it all at once.
#245
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Originally Posted by onebad82z
How has the Torco been holding up for you?
Is this the stuff?
http://www.torcoracingoils.com/produ...1-6cfe55e60a47
I plan to use their gear oil in my 12 bolt and figured I would give their ATF a shot in the T56 as well so I can order it all at once.
Is this the stuff?
http://www.torcoracingoils.com/produ...1-6cfe55e60a47
I plan to use their gear oil in my 12 bolt and figured I would give their ATF a shot in the T56 as well so I can order it all at once.
#246
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Originally Posted by MeentSS02
Great actually...still loving it, even in the bitter cold we've had here as of late. Still shifts very nicely at all RPM ranges. The link you provided is correct...that's the stuff. I'll also be putting their 85w140 RGO in my Strange when I get around to it (haven't installed it yet).
I also plan to run the 85w140 RGO in my Moser 12 bolt with the F*RD posi additive since everyone seems to hate the GM additive (and after discussions with chicane on the subject of 12 bolts and Eatons).I wanted to try Schaffer but it is just to hard to get ahold of in singles.
Thanks!
![Driving](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_driving3.gif)
#247
Kleeborp the Moderator™
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Originally Posted by onebad82z
Thanks for the follow up.Looks like I will give it a try myself.
I also plan to run the 85w140 RGO in my Moser 12 bolt with the F*RD posi additive since everyone seems to hate the GM additive (and after discussions with chicane on the subject of 12 bolts and Eatons).I wanted to try Schaffer but it is just to hard to get ahold of in singles.
Thanks!![Driving](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_driving3.gif)
I also plan to run the 85w140 RGO in my Moser 12 bolt with the F*RD posi additive since everyone seems to hate the GM additive (and after discussions with chicane on the subject of 12 bolts and Eatons).I wanted to try Schaffer but it is just to hard to get ahold of in singles.
Thanks!
![Driving](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_driving3.gif)
I was gonna get some of the Schaffer oil too, but it was much easier to source the Torco.
#250
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Originally Posted by davered00ss
Do not use Synthetic in a stock t56. There are paper parts (yes paper/cardboard) in your tranny that will disolve if you use synthetic fluid.
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Originally Posted by davered00ss
Do not use Synthetic in a stock t56. There are paper parts (yes paper/cardboard) in your tranny that will disolve if you use synthetic fluid.
Given the number of people who've voted in the poll here, and the absense of folks posting on here that their blocker rings were eaten up xxxx miles later because of it, I think this rumor should probably be put to rest.
Here's the LS1Tech.com thread about synthetic and blocker rings:
Ending the speculation: Blocker rings, who's had them fail?
Chuck
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Originally Posted by 1sick'98WS6
i pissed in my tranny fill three years ago, seems to be holding up great.
![Thatfunny](https://ls1tech.com/forums/images/smilies2/thatfunny.gif)
![Chug! Chug! Chug!](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_chug.gif)
Chuck
#255
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Royal Purple Syncromax is the best I have ever used, much better then Mobil 1, my car is 13yrs old and still shifts like new, even after 12 HPD school and countless autocrosses
#256
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Originally Posted by chucky2
This is a rumor that has never been proven. I actually started a thread on this a long time ago hear and also over at LS1.com (which was lost when they changed boards), and basically no one posted that they'd used synthetic and it ate their blocker ring material. To be fair, a small few, like a 2-3, posted they used synthetic and within a short period of time developed problems, and they'd attributed it to using the synthetic.
Given the number of people who've voted in the poll here, and the absense of folks posting on here that their blocker rings were eaten up xxxx miles later because of it, I think this rumor should probably be put to rest.
Here's the LS1Tech.com thread about synthetic and blocker rings:
Ending the speculation: Blocker rings, who's had them fail?
Chuck
Given the number of people who've voted in the poll here, and the absense of folks posting on here that their blocker rings were eaten up xxxx miles later because of it, I think this rumor should probably be put to rest.
Here's the LS1Tech.com thread about synthetic and blocker rings:
Ending the speculation: Blocker rings, who's had them fail?
Chuck
#259
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Originally Posted by Roadwarrior1956
Royal Purple Syncromax is the best I have ever used, much better then Mobil 1, my car is 13yrs old and still shifts like new, even after 12 HPD school and countless autocrosses
x2
![The Judge](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_judge.gif)