Tranny flush - 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 07-23-2004, 01:31 PM   #1
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Default Tranny flush

I know this topic has come up before, but I'm looking for some new opinions. My 97 has very old tranny fluid in it (at least 60k on it ), and a lot of shops are recommending that I get it flushed. Thing is, I had this done to the old fluid in my GTP, and the tranny failed a month later. Same thing happened to my buddy'* Honda Accord, old fluid, flushed, tranny failed shortly after. I've heard of this happening to others as well. I want to keep this car for awhile, and I don't want to kill the tranny. Anyone flush old fluid out without problem. Will, I remember you said it saved your tranny.
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Old 07-23-2004, 03:35 PM   #2
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I have also wondered the same thing. I'm sitting at 85K on my 99 and I want to get it done, but if I do, will it make my transmission fail?? I don't want to open a can of worms here!!
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Old 07-23-2004, 03:50 PM   #3
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Ah yes...here'* a topic for dabate . If it were me, I would just drain the fluid, replace the filter and top it up with fresh fluid.

Cheers,
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Old 07-23-2004, 03:54 PM   #4
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Quote:
Originally Posted by Foghorn
Ah yes...here'* a topic for dabate . If it were me, I would just drain the fluid, replace the filter and top it up with fresh fluid.

Cheers,
Understood. However, that will open up a can of worms for creating a leaky gasket that isn't leaking....yet!!

Need some gear heads in here to stab at this....
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Old 07-23-2004, 04:00 PM   #5
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Quote:
Originally Posted by vital49
Understood. However, that will open up a can of worms for creating a leaky gasket that isn't leaking....yet!!
The gasket is a non issue. Surely anyone competent can reinstall the pan without having a leak. That'* the first I hear of anyone hesitating on a job because of a potential gasket leak if the job isn't done right.

Cheers,
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Old 07-23-2004, 04:06 PM   #6
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Quote:
Originally Posted by Foghorn
Quote:
Originally Posted by vital49
Understood. However, that will open up a can of worms for creating a leaky gasket that isn't leaking....yet!!
The gasket is a non issue. Surely anyone competent can reinstall the pan without having a leak. That'* the first I hear of anyone hesitating on a job because of a potential gasket leak if the job isn't done right.

Cheers,
Easy killer. That'* not an excuse. I've had gaskets that simply won't seat up and will continue to leak. My policy is to leave well-enough alone.
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Old 07-23-2004, 04:12 PM   #7
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Quote:
Originally Posted by vital49
Quote:
Originally Posted by Foghorn
Quote:
Originally Posted by vital49
Understood. However, that will open up a can of worms for creating a leaky gasket that isn't leaking....yet!!
The gasket is a non issue. Surely anyone competent can reinstall the pan without having a leak. That'* the first I hear of anyone hesitating on a job because of a potential gasket leak if the job isn't done right.

Cheers,
Easy killer. That'* not an excuse. I've had gaskets that simply won't seat up and will continue to leak. My policy is to leave well-enough alone.
If your tendancy is to leave well-enough alone then why do a flush? And if you did a flush does that mean you would not change the filter for fear of having the pan leak?

Cheers,
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Old 07-23-2004, 04:21 PM   #8
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Quote:
Originally Posted by Foghorn
Quote:
Originally Posted by vital49
Quote:
Originally Posted by Foghorn
Quote:
Originally Posted by vital49
Understood. However, that will open up a can of worms for creating a leaky gasket that isn't leaking....yet!!
The gasket is a non issue. Surely anyone competent can reinstall the pan without having a leak. That'* the first I hear of anyone hesitating on a job because of a potential gasket leak if the job isn't done right.

Cheers,
Easy killer. That'* not an excuse. I've had gaskets that simply won't seat up and will continue to leak. My policy is to leave well-enough alone.
If your tendancy is to leave well-enough alone then why do a flush? And if you did a flush does that mean you would not change the filter for fear of having the pan leak?

Cheers,
Dude...leave it be. If your intent is to find fault with what people do to remedy their situations, then find another message board other than BC.com to do it. Enough.
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Old 07-23-2004, 04:47 PM   #9
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My $.02

I would change the xmission oil/filter. A good procedure is in the Tech Info section.

Or you could be like KEOTOK and wait until you get over 250,000 miles on your car and then change it.
http://www.bonnevilleclub.com/forum/...ic.php?t=20974
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Old 07-23-2004, 04:57 PM   #10
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Vital49 Dude,

Please re-read the entire post from the beginning. My initial response was to DDay and not you.

Furthermore, my initial comment pointed out that there is considerable debate on the subject of whether to perform this proceedure or not. I then went on to say what I would do were it me, clearly that was my opinion.

On the subject of gasket leaks, if you feel you're not capabable of performing work that involves correctly installing a pan without leaks, either don't attempt the job or take it to someone competent. Calling someone a killer for stating fear of a gasket leak is no reason not to perform the work is a bit lame.

I was in no way simply trying to find fault with anyone'* remedy. Besides, you never suggested one. You stated you 'like to leave well-enough alone' and that attempting a drain and refill and/or a filter replacement 'will open up a can of worms for creating a leaky gasket that isn't leaking....yet!!', so what is your suggested course of action?

As I am a Resident Gearhead here on Bonneville Club and DDay asked for opinions, what part of the concept are you not clear on?

Cheers,
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