Any Issue Flushing a 108K 4R100 - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 11-14-2009, 06:38 PM Thread Starter
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Any Issue Flushing a 108K 4R100

I dont know the history of my truck other than it was mostly a farm truck. It has 108K on the clock and wanted to know If I could get away with a flush and valve body install. The reason Im asking on my 94 chevy before I swapped to a 5 speed the truck had 184K when I got it. I put a new motor in it flushed everything and freshened up it all. Then 10k later the trans burnt up. I know If you flush every 50k its preventative maintence, but when you flush an old trans the detergents in the new fluid screw up an un maintained trans. By the way the current fluid looks and smell ok. I am new to the 4R100 and dont wanna mess anything up before I have the cash for a BD Performance 4R100.

Thanks... Corey

03 7.3, 4" exhaust w/FTE Stack, DPTUNER, AFEII, Roll of Duct Tape, and a few other goodies

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It sounds like bigfoot farting in a large trash can for a very long time!
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post #2 of 3 Old 11-15-2009, 05:38 AM
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no problems that i'm aware of, i've done it twice, no problems very easy to flush these trannies too
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post #3 of 3 Old 12-11-2009, 03:36 PM
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Changeing fluid at any mileage is ok. Will not hurt the trans. If the trans fails after you change the fluid, it was on it's last leg anyway. Changeing the fluid did not kill it!!!!!!!~!
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