I've done a search and intrigued by this. Anyone have long term report by now? Anyone used it in racing condition?

 

FWIW...... I would not use the 'regular' (cheaper) GM Syhcromesh, its way too thin - thinner than the Honda MTF. I'm using Motul Gear300 in my trans, and I'm very happy with it.

https://honda-tech.com/zero...66792

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ejprimo &raquo;</TD></TR><TR><TD CLASS="quote">everyone talks about the regualr and friction modified syncromesh, but no one talks about this one.

GM Part # 12346190
Chrysler Part #4637579
a.k.a. Castrol Syntorq LT 75W-85. its a GL-4 tranny lube and full synthetic.

http://ret0027h.eresmas.net/lo...b.htm

Oct 1, 2002 - 23:46 - From: Doug
Title: Castrol TAF-X in the USA
Message: Here is the response to the inquiry I sent to Castrol USA about where to get Castrol TAF-X in the USA: "Castrol TAF-X 75W-90 GL-4 gear oil is made in the U.K. and sold only in Europe. However, the equivalent in the U.S. is Syntorq LT. Having said that, Syntorq LT SAE 75W-85, API GL -4 is a premium high performance, synthetic gear lubricant for synchronized manual transmissions. The all new "clean slate" approach enables Syntorq LT to provide consistent performance and durability under the most severe operating conditions due to its unique polymer free formula. It has been designed primarily as a problem solving gear lubricant for manual transmissions to provide reduced gearshift effort at low temperatures. Syntorq LT is available through General Motors (Part #12346190) and Chrysler (Part #4637579) dealerships. Please contact your local dealership."

the best deal is at gmpartsdirect.

honda mtf is shear happy.

new http://theoildrop.server101.co...00000
brand new the viscosity is 11.26 which is halfway up the 30wt scale.

used http://theoildrop.server101.co...00562
after approx. 22,000 miles the viscosity is 6.63cst@100C which is a low 20wt.

thats about a 40% drop in viscosity! and honda reccomends changing your mtf every 30,000 miles? personally, i change my mtf every oil change b/c its cheap enough. its not that hard if you remove the VSS and use a funnel to fill there.
</TD></TR></TABLE>

 

It got rid of my lite grind in fifth.

 

Thank you for those responded. I'm sort of convinced that they do work in relieving some of the tranny problem. However, I'm more interested in the fact on how long have you used it, and if there is any ill effect after some period of time of using it. Anybody? From the search I can see people started putting this on their tranny about 2 years ago. That's quite a while ago. Surely there are more people that can answer these questions.

Also, anybody using it for track use? I need to know some data on heat related too.

 

I wouldnt use anything other than a full synthetic gear oil for Race/Track use.

 

I put the GM Friction Modified oil in the gearbox of my street car ('00 Si) back in March. I am really, really happy with the improvement it made. It was a little better imediately, but continued to improve with time. Now, I can't remember the last time the gearbox gnashed.

BTW, the chevy dealer had to special order it and it was expensive, but not as expensive as BG Synchroshift, which I ran in the race car (bmw) for a while and wasn't impressed with. The race car is back to Redline MTL now

 

Ive been running it for a while and my civic tranny with 200k on shifts GREAT. It shifted pretty well before but was rough when downshifting. Downshifts are super smooth now.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .RJ &raquo;</TD></TR><TR><TD CLASS="quote">I wouldnt use anything other than a full synthetic gear oil for Race/Track use.</TD></TR></TABLE>

I was under the impression syncromesh was full synth. Is this incorrect?

Looking for recomendations for my Type R that is pretty much a track only car. I currently run synchromesh.

 

Is this stuff for manual trans that require ATF?


Modified by Grumpy at 12:44 PM 7/21/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DX Hybridizer &raquo;</TD></TR><TR><TD CLASS="quote">I was under the impression syncromesh was full synth. Is this incorrect?</TD></TR></TABLE>

That is incorrect. The GM and Pennzoil stuff is the same.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Looking for recomendations for my Type R that is pretty much a track only car. I currently run synchromesh.</TD></TR></TABLE>

I've had good luck with the Motul, but any synthetic gear oil should be fine. Honda MTF is a 75w80, a 75w85 or 75w90 will work on track, just make sure you find the viscosity of whatever you want to use so that its not going to be too thick. 90w can be a big range.

 

I have used this combo before and it works great. I had it in the race car for about 10k miles. No problems what so ever, nice smooth shifts. I would recommend this to anyone looking for some good trany fluid.

I can alo get it for you at a good price if you need it.

 

thanks for the reply SoundBuys. What kind of race do you do and how often? 10K miles on a race car sounds a lot.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .RJ &raquo;</TD></TR><TR><TD CLASS="quote">any synthetic gear oil should be fine. </TD></TR></TABLE>

that's just not true. my 32k mile civic had Mobil1 75w-90 in it when I got it and it shifted like crap, worse than my 220k mile bmw.

I *think* that there is some friction property of the oil that needs to be matched to the material the synchros are made of. The Mobil1 was *not* a good match with the Honda synchros.

std disclaimer: I am not a tribologist.

 

Was the Mobil 1 thinner than the Honda MTF?

Some gearboxes just wont like some oils. Its trial and error, but there's enough people driving Honduhs around that you can pretty easily figure out what works and what doesnt.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by .RJ &raquo;</TD></TR><TR><TD CLASS="quote">Was the Mobil 1 thinner than the Honda MTF?</TD></TR></TABLE>

same advertised weight, 75w-90. no idea how the actual viscosity compares. Or any other properties for that matter. Just that it didn't work well.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">Some gearboxes just wont like some oils. Its trial and error, but there's enough people driving Honduhs around that you can pretty easily figure out what works and what doesnt.</TD></TR></TABLE>

eggsactly. I'm just glad someone somewhere tried the GM stuff and posted the part # on HT. There's no way the yahoos at the chebby dealer woulda figured out what I wanted without the GM part #

interesting article about MT lubes:

http://home.earthlink.net/~cmc...7.htm


Modified by JoelG at 1:58 PM 7/21/2004

 

i read about this stuff awhile back and someone posted a link for the good stuff ( friction modified) for a real good price....i think it was something like 6-7 bucks per bottle...if anyone knows it you should post it up...i just searched for it and came up empty. thanks

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DX Hybridizer &raquo;</TD></TR><TR><TD CLASS="quote">I was under the impression syncromesh was full synth. Is this incorrect?</TD></TR></TABLE>

From what I've HEARD there's a bunch of different syncromesh types. There's the full synthetic version which is the cheapest one I believe ($8-9?), then there's the non-synthetic one with the friction modifier ($12?), and then there's the syntorq version ($20?). It's all very confusing to me and I'm trying to figure out which one to use on a daily driver only to find that I have no clue.

What's the drain interval on that Motul? I'm highly considering that seeing the results on the Honda MTF even though I don't have a problem with my tranny unless I'm trying to do a quick 1-&gt;2 shift.

 

Let me ask a different way. My MANUAL transmission requires ATF. Is this GM syncromesh fluid a replacement product.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Grumpy &raquo;</TD></TR><TR><TD CLASS="quote">Let me ask a different way. My MANUAL transmission requires ATF. Is this GM syncromesh fluid a replacement product.</TD></TR></TABLE>
I don't believe so. I can't remember whether the bottle label specified that it was <u>manual</u> transmission fluid only or not, but I am pretty certain that it could not be substituted for ATF.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gser67 &raquo;</TD></TR><TR><TD CLASS="quote">i read about this stuff awhile back and someone posted a link for the good stuff ( friction modified) for a real good price....i think it was something like 6-7 bucks per bottle...if anyone knows it you should post it up...i just searched for it and came up empty. thanks</TD></TR></TABLE>

http://www.gmpartsdirect.com/

you have to buy a case tho.