GM Syncromesh in cold weather
10-11-2009, 10:29 PM
#1
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GM Syncromesh in cold weather I was changing my tranny fluid after my break in and was also looking at the temperatures we are gonna have at the lsx shootout and realized the low friday is in the 40's and the high is in the 50's. my question is, when does the syncromesh start to get affected by the outside temp?
10-13-2009, 06:55 AM
#4
i live in CT and we can get as cold as -20 and useually average below freezing, for the few times I drove the car, I never had an issue shifting. Stock GM AFT which was filled from factory, would have you feeling the 2-3 shift scrubbing but once it warmed up, it would not be an issue.
10-14-2009, 07:14 AM
#7
I dunno I just drove my car this morning, sitting outside all night and we had temps below freezing and a good amount of frost on the windows, no issues shifting. Unfortunately all T-56's have a notch to them but I noticed that Synchromesh seems to help that a great deal.
For the cost, and some time, swap both and try it out and see what you like. Id do the ATF 1st and then Synchromesh, if you do not like the 'mesh as much, go back, if you do, leave as is.
For the cost, and some time, swap both and try it out and see what you like. Id do the ATF 1st and then Synchromesh, if you do not like the 'mesh as much, go back, if you do, leave as is.
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10-14-2009, 12:51 PM
#8
Don't run synchromesh, I just about burned my leg on the transmission tunnel it ran so hot. After I gave up and switched to Mobile 1 ATF it got quite a bit smoother shifting (still not as good as I'd like but t56's are brutes so what are you going to do) and ran much MUCH cooler.
To top it off synchromesh wears the internals badly. Check out the leftover sychromesh after I pulled it with only about 1000 miles on it.
It turns all weird and separated but sparkly bit are metal particles.
To top it off synchromesh wears the internals badly. Check out the leftover sychromesh after I pulled it with only about 1000 miles on it.
It turns all weird and separated but sparkly bit are metal particles.
10-14-2009, 01:08 PM
#9
^ You had transmission issues, not fluid issues. This stuff is the same exact thing that GM bottles up and sells at the dealership. I have had this for 2 seasons since I did my first clutch swap. It was markedly improved over factory ATF which is put in the transmission.
Frijolee- I would pull your trans and inspect, I also would have you make sure your donut magnets are glued in and collecting any shavings. All trans have some metal floating around, the 2 large magnets collect most of it.
For anyone else, do a simple google search and there are quite a few different car enthusiest of different cars and backgrounds that seem to be quite favorable to the fluid.
Frijolee- I would pull your trans and inspect, I also would have you make sure your donut magnets are glued in and collecting any shavings. All trans have some metal floating around, the 2 large magnets collect most of it.
For anyone else, do a simple google search and there are quite a few different car enthusiest of different cars and backgrounds that seem to be quite favorable to the fluid.
10-14-2009, 02:04 PM
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i can get the acdelco sybcromesh which has the same exact label as the gm syncromesh for $5.49 a quart!! so im gonna try and and hopefully i'll like it 
fluid, general, gm, loacalization, lsx, motors, pennzoil, shootout, synchromesh, syncromesh, t5, t56, transmission, weather, wheather
