97 B2500 Transmission Fluid Amount

[TimsterNJ]

My transmission fluid is low and the van has been slipping in reverse, so I plan on dropping the pan and changing the filter. I know this will not change all the fluid, but I figure this is a good time to change the filter. The owner’s manual says after dropping the pan, start with 2 quarts and go from there. I have seen posts where it took 7-8 quarts. I have the 5.2L with a 4 speed, I think? It has Drive, 2 and 1 with overdrive. I guess that is a 4 speed. Any suggestions would be appreciated...

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[alloro]

8 quarts for a complete tear down and rebuild, but only 4 quarts for a filter change and refill.

You'll need to adjust the bands when the pan is off.

[lilredex]

You can go a bit further if you wish. When you have the pan all buttoned up you can disconnect the line from the cooler (rad) and have it empty into a clear jug. Add a little oil at a time and run for short periods in neutral. This will attempt to cleanse the remainder of the transmission oil. You can watch your progress in the clear jug. Keep the running periods short so the transmission does not run dry.

And yes, be sure to re-adjust both bands. I usually make them slightly tighter than spec, especially if an older hi miler. You can double check the clearance with a feeler gauge, but I don't have that info. at hand at the moment. Could have been in Carl H. Monroes transmission book on 727's ISBN: 9781557883995