Help!! - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 5 (permalink) Old 12-30-2007, 08:32 PM Thread Starter
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Help!!

I've started several threads trying to find out which tranny I have and what fluid to use in in and the differential. I've got all the owners manuals, including the 7.3 supplement. But none of them say which transmission is in my truck, and now that some fluids aren't available anymore, not sure what to use.
I've got a 1996 F250 supercab with 7.3 diesel. I can read the door label, but not sure what to look for, or if that even tells what transmission is in it. I'm trying to find out which trans. it has and what kind and how much fluid. Should I replace the transmission filter? It's got 157,000 on it and all regular maintenance is logged as being done per Ford's specs....not sure what the interval was.
And as far as the rear, I've got a 4.10 gear in the diff.....not sure whether to use synthetic or conventional. Always in Florida...would 80-140 be ok?
THanks a bunch!!

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1996 F250 Supercab Longbed White with 168,000 miles. Gooseneck, Prodigy Brake controller, Diprocol guages/pillarpod,overhead guages, 3 in downpipe, 18K mod from Dfuser, DIY intake.
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post #2 of 5 (permalink) Old 12-30-2007, 11:13 PM
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You have an E40D in the OBS style. They didn't use the 4R100 until the superdutys.
As far as the fluid, I belive it shouldn't be the Mercon dual rated, IIRC. (HOWEVER I thought I read somewhere that Ford has "Rethought" that rule, and it doesn't matter now. (For the 4R100s anyway) Basically the same trans as yours though. I think Mobile 1 synthetic trans fluid is acceptable. I am sure someone else will chime in with absolute confidence for you!

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post #3 of 5 (permalink) Old 12-31-2007, 12:05 AM
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yes, you have an E4OD. your trucks just like mine. the manual calls for mercon or dextron II. but i'm sure there are other fluids you can use . i know that amsoil
makes an excellent synthetic fluid for our trucks.

1996 F 250 extended cab,4x4,7.3l auto trans,power adder cone filter, 3.5 inch straight exhaust, DFuser 18k mod.and veggie powered.
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post #4 of 5 (permalink) Old 12-31-2007, 01:15 AM Thread Starter
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Thanks guys...the Ford "yes you can, no you can't" kinda threw a wrench in it for me. Mercon/MerconV Dexron/II. Can't we all just get along??? What about the rear diff with 4.10 lim slip? 80-140 synthetic sound good?

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1996 F250 Supercab Longbed White with 168,000 miles. Gooseneck, Prodigy Brake controller, Diprocol guages/pillarpod,overhead guages, 3 in downpipe, 18K mod from Dfuser, DIY intake.
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post #5 of 5 (permalink) Old 01-01-2008, 07:44 AM
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I'm not sure about your tranny, but mine is the 4R100 and my Uncle is a manager at O'Reilly's and their computer calls for Mecon 5, but different tranny might take a different fluid. From what I know, those stores stay pretty up to date, so you could probably go to the store and they could help.
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