trans fluid ? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-21-2006, 09:10 AM   #11
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I've never seen an actual example of a flush causing any problems or accellerating the failure of a trans. I've done flushes on both of my cars. Both with mild issues and high miles.
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Old 03-21-2006, 09:52 AM   #12
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I vote with drop the pan. I had a problem with 65E at 80K miles roughly. I changed fluid 3 times in 12 thousand miles or so by dropping the pan and changing the filter (had done it at 65K miles). I did not change filter on repeat flushes. Keep the rubber covered gasket from the original unless someone else ha switched already. They help cool the transmission. They are meant to be reuseable.

I replaced about 7 quarts out of 12 by dropping the pan. Next time I replaced 7 quarters out of 12. Third time I replaced 7 quarts out of 12. 41%*41%*41%=7% of original fluid left in trans. Probably same as a flush would have done in one run.

Replacing part of the fluid is not as likely to make a quick change to some clog or crud in the tranny. Buick Service Manager did not recommend a flush. He verified with another service manager who do flushes.

I'm at 135 K and going fine.
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Old 03-21-2006, 10:22 AM   #13
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Just had a flush on mine with 123,000 miles and it has been acting a lot better since then. Fluid wasn't black but quite dark and smelled a little bit.
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Old 03-21-2006, 01:47 PM   #14
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I'll make a reccomendation here..

If you do not want to flush, please take the time to change the fluid once a year... Or if you are like me and are anal about fluid changes, do it before the summer and after the fall... Your trans will thank you in the long run..

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Old 03-21-2006, 06:38 PM   #15
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if the car has the magnet in the pan won't that stop metal shavings from messing up the gears, so in turn a drain and filter change would not do any harm to the tranny, i just did mine last weekend i don't think it has ever been done and right now everything is smooth. on another note when i droped the pan the magnet was covered in like a half inch of silver grease.
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Old 03-21-2006, 06:41 PM   #16
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Quote:
Originally Posted by wf2tm51
if the car has the magnet in the pan won't that stop metal shavings from messing up the gears, so in turn a drain and filter change would not do any harm to the tranny, i just did mine last weekend i don't think it has ever been done and right now everything is smooth. on another note when i droped the pan the magnet was covered in like a half inch of silver grease.
If it has never been done then you should expect to see a lot on that magnet...

For reference, this was mine after 20 months or so... Keep in mind I have always kept the fluid changed...


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Old 03-21-2006, 06:58 PM   #17
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That'* not silver grease. It'* miniature pieces of you tranny suspended in transmission fluid.
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Old 03-21-2006, 08:19 PM   #18
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i guess it was never done cause it was thick , how often should you drain the tranny
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Old 03-21-2006, 08:27 PM   #19
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Quote:
Originally Posted by J Wikoff
That'* not silver grease. It'* miniature pieces of you tranny suspended in transmission fluid.
Correct... And the filter is really a screen of sorts that filters out the larger chunks while the rest settles on the bottom of the pan... Chunks would be a bad thing



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Old 03-21-2006, 08:28 PM   #20
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Quote:
Originally Posted by wf2tm51
i guess it was never done cause it was thick , how often should you drain the tranny
I reccomend once a year... If you do it now, do it again after the summer, and then do it after every summer...

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