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  #1  
Old 07-10-2004, 03:23 PM
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Fluid Exchange vs. Pan Drop

I haven't seen any posts on fluid exchange vs. pan drop/filter change debate. One servicer says "its what the factory recommends" vs one that says "its just a profit generator for the servicer without added benefits". Is the filter a"filter" or just a screen without any filtering media? Seems safer not to drop pan and risk contaminating the system.

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  #2  
Old 07-10-2004, 05:25 PM
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Re: Fluid Exchange vs. Pan Drop

Quote:
Originally posted by DesertScrew
I haven't seen any posts on fluid exchange vs. pan drop/filter change debate. One servicer says "its what the factory recommends" vs one that says "its just a profit generator for the servicer without added benefits". Is the filter a"filter" or just a screen without any filtering media? Seems safer not to drop pan and risk contaminating the system.
That depends on the transmission, a C4 and C6 have screens, the 4r70W has a true filter. You may get away with not changing the filter but.... who knows.

There are a couple added benefits of removing the pan. You can see what has accumulated there and judge if there may be signs of problems. You can install a new filter(screens don't need to be changed). The 4r70w has a magnet that collects miniscule metal particles and should cleaned. Something a fluid exchange won't accomplish.

BTW what year vehicle?
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Old 07-10-2004, 07:48 PM
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I have a 2001 Super Crew 5.4 4WD. The transmission code is U which I think is the 4R70W. BTW, my maintenance manual indicates a transmission filter change at 150K...
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Old 07-10-2004, 08:10 PM
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I like fluid exchanges since they force the old out of the cooler and lines. This might create a problem on some higher mileage units that have never been serviced though. They're also a lot easier and cleaner to do than a filter/pan service, although fluid exchanges require specialized machines.

We recommend fluid exchanges/flushes at 30K and 60K, then a filter change at 90K at work. Assuming your transmission isn't broke and you haven't run it hot or overworked it or anything, you'll probably be fine just with a filter swap and fresh fluid every 30K or so.

edited for not paying attention to what I was typing
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Last edited by Quintin; 07-10-2004 at 08:12 PM.
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