GM Syncromesh
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GM Syncromesh
Hello,
I am pretty new here and have a couple of questions. I have a 85 gs with a gsl rear-end and a manual transmissoion. I am going to change the transmission fluid and need to know if you can just use the GM Syncromesh and fill it up with just that. Also, do I need an additive to the rear end for the LSD? Any help is greatly appreciated.
Thanks,
Chris
I am pretty new here and have a couple of questions. I have a 85 gs with a gsl rear-end and a manual transmissoion. I am going to change the transmission fluid and need to know if you can just use the GM Syncromesh and fill it up with just that. Also, do I need an additive to the rear end for the LSD? Any help is greatly appreciated.
Thanks,
Chris
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im pretty sure you can just use any manual tranny fluid. and also, there are gear oils made only for LSD rears vs. open diff rears. for racing i put the non-LSD oil in the LSD so it grips even better but im pretty sure you dont wanna do that for street driving because it tends to chatter or grip too hard.
--eric
--eric
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Not sure if it helps, I used mobil synthetic gear oil in my tranny and it "felt" better to me. Basiclly if your syncroniser is going out it's going to go out. The best thing to do until you get a rebuild or another trans. take a pause shifting between 1st and 2nd and when down shifting heel/toe and you may also want to double clutch. If you do that you'll be doing most of the work for the syncro, and it will last longer.
#5
GM Syncromesh
Gm Syncromesh is Magic Juice for you transmission!
I had a terrible time shifting into third under a load in my GSL-SE untill I put some GM Syncromesh in on the advice of a 3rd gen buddy. It shifts smoothly and seemlessly now. Decent price and plus it's supper easy to get! For the rear end I used some Castrol Diff fluid that has the LSD stuff already mixed im, can find it at almost any parts store.
Use a manual trans specific fluid, the regular gear oil at the parts store will actually eat away at your bronze synchronizers and make things worse.
I had a terrible time shifting into third under a load in my GSL-SE untill I put some GM Syncromesh in on the advice of a 3rd gen buddy. It shifts smoothly and seemlessly now. Decent price and plus it's supper easy to get! For the rear end I used some Castrol Diff fluid that has the LSD stuff already mixed im, can find it at almost any parts store.
Use a manual trans specific fluid, the regular gear oil at the parts store will actually eat away at your bronze synchronizers and make things worse.
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Thanks for the help. I have one more question. In the book, it says to use some sort of pump when adding the fluid. Is there another way to add it, like sticking the bottle in there and squeeze it or what?
Thanks,
Chris
Thanks,
Chris
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The filler plug is on the side of the tranny and is hard to reach without a pump or something. I put it in through where the gear shift goes but that is alot of work. Maybe a long hose or something to reach there.
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I called up GM and they said their "special GM syncromesh fluid for manual trannies" is no-longer produced... why do I get a feeling I wasn't talking to the right person...
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Originally posted by cveklund
Thanks for the help. I have one more question. In the book, it says to use some sort of pump when adding the fluid. Is there another way to add it, like sticking the bottle in there and squeeze it or what?
Thanks,
Chris
Thanks for the help. I have one more question. In the book, it says to use some sort of pump when adding the fluid. Is there another way to add it, like sticking the bottle in there and squeeze it or what?
Thanks,
Chris
That's what I did, just had to keep refilling the bottle as you'll only be able to get about half in before you run outa squeeze, so top it up and continue fulling
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Originally posted by specRX7_22
buy a suction gun..... WELL worth it and probably cheap (theres not much to them)
makes adding rear fluid and tranny fluid ALOT easier.
--eric
buy a suction gun..... WELL worth it and probably cheap (theres not much to them)
makes adding rear fluid and tranny fluid ALOT easier.
--eric
#12
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I've heard that using ford type F in a manual transmission works wonders, even if the trans was "designed" for gear oil. The theory is sound - the conditions in a manual trans are much gentler than in an automatic, and the thinner ATF works just fine. I'll try it out and see how well it works on my balky 2nd gear synchro.
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Ok, I re-read the bottle, it is Penzoil Syncromesh. It is for the GM cars, but is made by Penzoil. Does it take a little driving to help the syncro or will it just work instantly?
Chris
Chris
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Originally posted by peejay
I've heard that using ford type F in a manual transmission works wonders, even if the trans was "designed" for gear oil. The theory is sound - the conditions in a manual trans are much gentler than in an automatic, and the thinner ATF works just fine. I'll try it out and see how well it works on my balky 2nd gear synchro.
I've heard that using ford type F in a manual transmission works wonders, even if the trans was "designed" for gear oil. The theory is sound - the conditions in a manual trans are much gentler than in an automatic, and the thinner ATF works just fine. I'll try it out and see how well it works on my balky 2nd gear synchro.
keep us posted
#16
Driven a turbo FB lately?
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Originally posted by peejay
I've heard that using ford type F in a manual transmission works wonders, even if the trans was "designed" for gear oil. The theory is sound - the conditions in a manual trans are much gentler than in an automatic, and the thinner ATF works just fine. I'll try it out and see how well it works on my balky 2nd gear synchro.
I've heard that using ford type F in a manual transmission works wonders, even if the trans was "designed" for gear oil. The theory is sound - the conditions in a manual trans are much gentler than in an automatic, and the thinner ATF works just fine. I'll try it out and see how well it works on my balky 2nd gear synchro.
Wonder if I need to change fluid in that 88 t2 tranny? Man that sounds like a FD, with the grinding in 5th problem. The trans was out of a 88 t2 66k on the odo, wrecked in the side.
#17
Originally posted by specRX7_22
buy a suction gun..... WELL worth it and probably cheap (theres not much to them)
makes adding rear fluid and tranny fluid ALOT easier.
--eric
buy a suction gun..... WELL worth it and probably cheap (theres not much to them)
makes adding rear fluid and tranny fluid ALOT easier.
--eric
For those that have grinding problems, remember to check your shifter bushings as well as your oil before replacing your synchros.