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Manual Transmission Fluid Change - how often?

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Old 06-07-2009, 12:38 PM
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Manual Transmission Fluid Change - how often?
How often do you need to change manual transmission fluid? I had mine changed to GM Synchromesh Friction Modified (solved the infamous 3rd gear issue) a little over two years ago and 24,000 miles. Is it time to get it changed? Shifting is fine but I do get a little notchiness every now and then - nothing serious but it's not quite at smooth as it was even a couple months ago.
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Old 06-07-2009, 02:25 PM
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Originally Posted by Yakuza17
How often do you need to change manual transmission fluid? I had mine changed to GM Synchromesh Friction Modified (solved the infamous 3rd gear issue) a little over two years ago and 24,000 miles. Is it time to get it changed? Shifting is fine but I do get a little notchiness every now and then - nothing serious but it's not quite at smooth as it was even a couple months ago.
I think 30k+ miles. Has it been cold up there, sometimes that causes it to get notchier.
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Old 06-07-2009, 05:51 PM
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every 30k

to save some tranny syncro, at a stop light shift into third then first..somewhat helps notchiness.

thats what i do
Last edited by JwongTLS; 06-07-2009 at 05:53 PM.
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Old 06-07-2009, 07:12 PM
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Read this:
https://acurazine.com/forums/3g-tl-2004-2008-93/gm-synchromesh-modified-mtf-620194/

Seems 25Kmi to 30Kmi is good.
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Old 06-08-2009, 06:56 PM
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Thanks everyone for the advice. I'll probably go ahead and change it some time this summer, IF I can find a GM dealer that's still in business!
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Old 06-09-2009, 05:05 AM
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I do mine every 40,000 miles. But then, I have never experienced any of the problems that others have had with their manual TL's.
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