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Why does MT use FM Synchromesh but ATF Redline NO FM?

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Old 04-19-2011, 07:39 AM
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Racer
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Why does MT use FM Synchromesh but ATF Redline NO FM?

I don't understand how come manual transmissions users suggest GM Synchromesh Friction Modified but for Auto's Redline Racing ATF with no Friction Modifiers are recommended?
Old 04-19-2011, 07:49 AM
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I bet you can learn a lot from reading these threads.

https://acurazine.com/forums/3g-tl-2004-2008-93/amsoil-synthetic-transmission-fluid-vs-redline-d4-atf-776213/
https://acurazine.com/forums/3g-tl-performance-parts-modifications-112/racing-atf-764322/

specifically read "I hate cars" and "inaccurate"s post
Old 04-19-2011, 10:32 AM
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Those links suggest type f fluid but still doesn't answe why manuals use friction modifiers whereas ATF is suggested not to.
Old 04-19-2011, 10:34 AM
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you didnt read......

I bet "ihatecars" explained in great detail what FM does and why the auto trannies doesnt like it.....
Matt, always explains why and why not.

Please take the time to read some of that info.
Old 04-19-2011, 10:37 AM
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Originally Posted by I hate cars
Other forums don't mean a thing when it comes to what we use in the TL. I've spent countless hours going over the technical side of this in other threads and I honestly don't feel like doing it all over again. It's out there, just search.

The end result is a non FM fluid cures shudder in the TL, much less create it.
It shows much less wear as is evidenced on the drain plug.
Shift quality is much better than stock.
Shifts are much quicker than stock.
The current turbo TL has never had a trans failure on this fluid while the first turbo TL failed within a day on Z1.

It's all on here and with so many people doing this and all with the same positive results there is no debate. The end results speaks for itself.
I'm busy at work and do not have time to quote each and every post that explains why.
but the info is already here. you just need to dig through it

For what its worth, Matt used to be a transmission re-builder.
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