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Old 08-28-09, 04:20 PM
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Cadillac(s): 89 Brougham deVille d'Elegance
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Re: 87 Fleetwood Brougham - trans whines when stopped and in gear

Quote:
Originally Posted by RocketFast321 View Post
You can flush it just not a power flush. Disconnect the lines at the rad. Use two buckets. One with new fluid and one for the old stuff.
Let the trans pump suck up the new fluid as it pumps the old stuff out.
After you do that you have to change the filter, because the old fluid and any debris in it will go through it before it reaches the bucket. For this purpose I would buy double the amount of ATF your transmission calls for (5L X 2 = about 2.6 gallons). When you drop the pan you may be able to recover some of the new fluid with a large (clean) backing pan.

But a power flush is recommended, because if the new fluid is traveling at the same rate as the old, then it won't brake up the dirt build up (it will just change the fluid in the torque converter).