what kind of transmission fluid does the getrag take?

GM Synchromesh GM part number 12345349

I use the Pennzoil synchromesh oil. It's good stuff.

i have an 87gt and my trans has a tag on the dipstick that says to use 5w30 engine oil as does my owners manual and mitchell ondemand for that year, is that correct?
Ant

quote Originally posted by Ants87gt: i have an 87gt and my trans has a tag on the dipstick that says to use 5w30 engine oil as does my owners manual and mitchell ondemand for that year, is that correct? Ant

it was back in the day, but syncromesh is the stuff to use now

quote Originally posted by $Rich$: it was back in the day, but syncromesh is the stuff to use now

Engine oil contains pressure additives, anti-foam agents, detergents and the like. What lubrication properties do you feel are superior with synchromesh fluid?

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87GT - with 3800SC Series III engine, 4T65eHD
87GT - 3.4L Turbocharged engine, modified TH125H
" I'M ON THE LOOSE WITHOUT THE JUICE "

GM issued a TSB to use Synchromesh in all the manual trannies in Fieros including those originally filled with motor oil. Unless you're experiencing cold-weather shifting problems or are changing the fluid you can leave the original motor oil in those trannies so filled. All of the Getrags came with Synchromesh IIRC. Synchromesh does increase shifting quality.

JazzMan

I have one more question about the fluid i found 2 gm bulitens one is for the isuzu trans which i don't have the other is for what the gm bulliten calls a hm282 and the hm290 and mitchell calls a muncie 76mm for the grand am, is that the same as the fiero trans and therefore would use the syncrmesh fluid?

thanks
Ant

Yes.

JazzMan

Yeah, the Getrag used in the Fiero is the HM282.

REDLINE MTL REALLY SMOOTHS OUT THE SHIFT AT ANY TEMPERATURE IN THE GETRAG 5- SPEED.

quote Originally posted by qcelectron: REDLINE MTL REALLY SMOOTHS OUT THE SHIFT AT ANY TEMPERATURE IN THE GETRAG 5- SPEED.

QUIT YELLING AT ME!!

My friend really likes regular motor oil... But he has killed 5 transmissions in the last 1.5 years. He still swears the one time he used syncromesh it shifted poorly.

quote Originally posted by darkhorizon: QUIT YELLING AT ME!!

Heard a report on TV today that capital letters are expected to be extinct in another 50 years. Unless you are yelling.

I have redline MTL in my getrag, Muncie 4 spd, and SHO 5 spd with good results in all. John

I had already just filled my trans with 5w-30 so i decided to see how it ran with it and so far it seems to shift fine so unless i have any issues i think that i'm going to leave it for now.
thanks fo the info
Ant