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Old 12-28-2008, 05:40 PM
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Tranny Flush

Ok I am confused when I change my tranny fluid I should drop the pan and change the filter but does that change all of the tranny fluid? I want to switch to mobil one
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Old 12-28-2008, 05:43 PM
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Quote:
Originally Posted by derrickmcphate View Post
Ok I am confused when I change my tranny fluid I should drop the pan and change the filter but does that change all of the tranny fluid? I want to switch to mobil one
no. you need to get out the oil from the TC...

follow these instructions: http://www.amsoil.com/faqs/ATF_and_F...Procedures.pdf

any reason why you want to go with mobile 1?
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Old 12-28-2008, 06:10 PM
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i like mobil one and always used it it is in my transfer case but i will do an oil change and the diffs the diffs will have mobil 1 dont know about the motor yet its got 125 on it
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Old 12-28-2008, 06:19 PM
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to do a complete flush takes about 20 quarts. I did mine the other week when I put in my valve body.
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Old 12-28-2008, 07:39 PM
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Thats a scary way to do it. I though these transmissions had a drain plug on the tq it self...
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Old 12-29-2008, 05:38 AM
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Quote:
Originally Posted by NYMustang50 View Post
Thats a scary way to do it. I though these transmissions had a drain plug on the tq it self...
Not after 2000 they didn't, that still doesn't get all the fluid out. I didn't look at the directions that Raul linked to but if it is where you disconnect the return line and run a clear hose to a bucket, start truck, shift through all the gears pausing 2 sec in each gear, as soon as air appears in the hose you stop and put 7 more quarts back in it and do it again, do this three times and you have a complete flush. If this is what he posted to it is the right way and thousands of us have used it for years. I would drain the pan because you can and fill with 7 quarts of fresh, this will be one less cycle you have to go through. Ford claims you never need to change the filter but for $20 it is piece of mind.
Make sure you only use Mercon/DexronIII unless your trans has been rebuilt with newer seals.

NCH
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