Myth Busters Please read!! - 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 11-15-2009, 08:39 AM   #11
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Last week I changed out the fluid and filter on my 96 Bonne I just got. It has 118,000 miles. Fluid was not pretty pink anymore but everything worked great. Just seems to make sense to put clean fluid in there and a new filter. I know I feel better.
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Old 11-15-2009, 10:07 AM   #12
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If over 100k I wouldn't do a flush, but you should still be fine with a fluid change. dropping the pan only removes about half the fluid.
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Old 11-15-2009, 07:38 PM   #13
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Old 11-15-2009, 08:01 PM   #14
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Quote:
Originally Posted by Elcamino man View Post
What would you consider high mileage? My 05 GXP has 71,000. I bought the car a few months ago and don't know if the tranny has ever been serviced.
Look in the owners maual. I dont think it'* required for 100k?

My 85 Regency went toi the junk yard with the tranny still shifting smoothly. It really depends on the history of it and what you plan to do with it, not the mileage itself. If the tranny is working decent when you do the swap, and your going to drive it smoothly, odds are it will be fine. If it spent it'* 200k+ life babied and your going to brake the tires loose at every light, dont count on it lasting long.
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Old 11-15-2009, 10:06 PM   #15
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I get on her,but I don't always do that just enough to blow her out.Where I live not alot of starting and stopping. Don't know the cars history
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Old 11-15-2009, 10:17 PM   #16
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I've never had any problems with a fluid filter change
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Old 11-16-2009, 09:29 AM   #17
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The facts and myths about trans flushes/services are usually skewed.

Fact: A good running trans will not have problems if a flush is done. Note that I state good running, as in no known problems or issues that cause the owner to opt for a flush. Simply changing the fluid should freshen up the detergents in the fluid and add back all the lubricants etc that have broken down in the old fluid.

Fact: Most people do not consider a flush until their trans is presenting symptoms. Usually in this case the old fluid with friction material suspended in it is the only thing keeping the worn clutches grabbing and working. When the trans is flushed that material is removed. The clutches then show more signs of slipping than before the flush was done. I call this the owner induced failure. An issue was known, the flush didn't fix it and the flush is blamed for the transmission failure.

Fact: A trans flush should be followed by a regular transmission service, where the filter is changed.

Fact: Transmission fluid is an oil with detergents and lubricants, when it becomes old or burnt those properties are reduced. For a transmission to run well, it should not be neglected of normal service intervals. Normal service on a transmission is dropping the pan, replacing the filter and the approximate 7 quarts of fluid that drains with the pan drop.

Myth: Transmission service causes transmission failure. The truth here is that transmission neglect over years will cause the transmission service to appear that it caused the transmission failure.
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Old 11-19-2009, 02:58 PM   #18
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I never flush, I just remove pan and replace filter and oil. Never had a problem.
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Old 11-20-2009, 12:29 AM   #19
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300,000km on mine , poured out not flushed and no prob yet.

It doesnt matter about the miles/ km, it you see the oil burnt and black then ur looking a tranny not an oil change, if its brown/red then there shouldnt be any problems.
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