To flush or not to flush... - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 07-17-2009, 11:45 AM Thread Starter
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To flush or not to flush...

As you probably guessed, the question is should I get the transmission flushed or not? I have heard good and bad things about both. A friend with a NBS 7.3 said he recommends doing it every 60k miles or so. I have also heard that it can be bad because it can stir up junk in the trannie and cause more harm than good. The Ford dealership near my dad will not flush a transmission on any vehicle, period.

What is the true story here?
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post #2 of 8 Old 07-17-2009, 06:48 PM
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i would just drop the pan and change the oil and filter. the flush is a fast cheap way for lube shops to make a quick buck. it takes some of the liability off them with not having to open the trans pan.

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post #3 of 8 Old 07-17-2009, 06:50 PM
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what type of driving do you do? some to most towing i would go 80% of OE suggestion. heavy duty to severe 60% of OE suggestion.

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post #4 of 8 Old 07-18-2009, 09:30 AM Thread Starter
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I don't do a whole lot of towing. This isn't my daily driver, I drive it once or twice a week and tow probably several times a year.
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post #5 of 8 Old 07-22-2009, 05:17 PM Thread Starter
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What's the point of dropping the pan?
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post #6 of 8 Old 07-22-2009, 05:26 PM
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Quote:
Originally Posted by Naby View Post
What's the point of dropping the pan?
to change the filter

early 99 f350 lariat stock other than 5" strait pipe my name is Jim I wont tell ya what the wife calls me
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post #7 of 8 Old 07-22-2009, 05:55 PM Thread Starter
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Oh, right. So there is nothing to clean or anything in there then.
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post #8 of 8 Old 07-22-2009, 06:06 PM
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the filter in the torqshifts is basicly just a screen. they have an external filter that needs to be replaced when it is flushed. If you use the BG fluid additive with the flush every 30,000 and you do the first flush before 36000 miles you get $2000 in trans warranty. and if you wait till between 36000 and 72000 you get $1000 in trans warranty. We flush all kinds of transmissions at my dealership the only problem i ever had was my 88 taurus that went south within 50 miles after i flushed it. but it had an issue already before i flushed it.

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