Tranny Fluid Change ??? - Ford Powerstroke Diesel Forum
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Old 11-08-2007, 09:57 AM
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Question Tranny Fluid Change ???

I don't know when the last time the tranny fluid was changed (truck is new to me). Its got almost 200k miles. I wanted to change it soon. Fluid recommendations? Cost? Any filters I should change? Tricks?

Any info would be great!
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Old 11-08-2007, 09:58 AM
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I would flush it with Amsoil ATF if it was me. But any DexronIII mercon will work
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Old 11-08-2007, 10:16 AM
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i would take it to a jiffy lube or something like that so they can change the filter (you have to take the whole pan off) and have them flush it. It takes almost an hour but its well worth it for them to do it
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Old 11-08-2007, 10:21 AM
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Ahhhh, exactly the info I wanted. So I'm assuming there's a gasket that will need to be replaced also?
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Old 11-08-2007, 10:59 AM
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if i remember right the gasket is reusable on our trucks
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Old 11-08-2007, 11:00 AM
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Gasket is reusable.

Do you plan to do it yourself or are you taking it somewhere?
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Old 11-08-2007, 11:02 AM
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Quote:
Originally Posted by cowgirliemoe View Post
Ahhhh, exactly the info I wanted. So I'm assuming there's a gasket that will need to be replaced also?
The gasket is reuseable. I did mine without jacking it up, it's really easy. Just a little messy. Just make sure you torque the bolts at 20 inch pounds, and make sure the seal for the filter comes out.

Not sure what kind of mechanical experience you have, but it was easy. Also, most people say if your tranny fluid has not been changed at 100,000mi then not to change it at all. I have never done this though. All of my vehicles get changed at 50K.
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Old 11-08-2007, 11:07 AM
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I second the "you might not want to change it" thought. I just picked up a 95 PSD with 220k on it, it was shifting a little funny so I changed the fluid. Needless to say it didn't shift well after that. Cold it was OK, but once it warmed up it would not hit second.

I would say if it shifts fine and the fluid looks OK, maybe change it. If it shifts funny and the fluid is dark...you might want to think about it or take it to someone who knows transmissions really well and get their opinion.
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Old 11-08-2007, 11:36 AM
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I say change it and change it regularly, these things are very expensive to replace. I personally would not even consider taking it to a lube shop and having it flushed, too risky in my opinion. It is very easy to do, on mine I drained the pan and the converter (most trucks have a drain plug in the torque converter) and got 16-17 qts out of it. There is a filter in the pan that needs changed but it is easy too. If it were my truck I would go with Amsoil synthetic and add a Trucool 40,000# tranny cooler behind the front bumper and a temp gauge if it doesn’t already have one. Should cost less than $200 to do all that. Also the transfer case takes the same fluid and the rear end lube should be changed too.
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Old 11-08-2007, 11:38 AM
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The "don't change it if it hasn't been changed" is an old wives tale. Get the old fluid out and the new stuff in. The biggest problem is not properly filling the tranny and most of the time after the change you're LOOKING more intently for problems, so you find them.
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