Transmission Fluid type
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More Turbo
Joined: Jun 2001
Posts: 571
Likes: 1
Transmission Fluid type
Good day all,
I recently purchased a 2002 F-250 with the 7.3L.
When I go home over the holidays I am going to do some routine maintenace including changing my tranny fluid and filter.
I do not do much heavy towing, mostly highway driving and light to moderate loads.
my question is this which type of fluid is this suppose to take? The owners manual I downloaded for the vehicle says use Mercon and not to use mercon V or a dual usage. Well I know fors discontinued Mercon and says that mercon V is backwards compatable and can be used in any application calling for Mercon fluid. Am I correct in understanding this?
So Mercon V fluid should be correct??
Has anyone had any good experiences with any other types of fluids?
Thanks for any input
I recently purchased a 2002 F-250 with the 7.3L.
When I go home over the holidays I am going to do some routine maintenace including changing my tranny fluid and filter.
I do not do much heavy towing, mostly highway driving and light to moderate loads.
my question is this which type of fluid is this suppose to take? The owners manual I downloaded for the vehicle says use Mercon and not to use mercon V or a dual usage. Well I know fors discontinued Mercon and says that mercon V is backwards compatable and can be used in any application calling for Mercon fluid. Am I correct in understanding this?
So Mercon V fluid should be correct??
Has anyone had any good experiences with any other types of fluids?
Thanks for any input
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
The new Mercon V is compatible. I did a flush and fill using Valvoline Syn Power Mercon V, a synthetic ATF. I also used it for a power steering flush and to replace the X-fer case fluid. Not many miles on all this yet, but seems fine so far. I bought 26 quarts at NAPA and asked for a volume discount and thay gave me 10% off. 20 qts for tranny and about 3 qts each for X-fer case and power steering and had almost a qt leftover for topping off. My garage smelled like ATF for weeks even when all my mistakes were contained by plastic drop cloths.
Frmr Ford Trans Engr
Joined: Aug 1999
Posts: 24,707
Likes: 2,628
From: SE Florida
Yes, you are correct. Use MERCON V.
Lead Driver
Joined: Jan 2007
Posts: 6,708
Likes: 5
From: Kiowa CO
Yes, ATF is used in both the T-case and power steering systems of these trucks.
Lead Driver
Joined: Dec 2006
Posts: 7,092
Likes: 145
From: San Diego, CA
Yep. ATF for the tranny, transfer case and power steering. I used Mobil 1 Synthetic ATF for the tranny and transfer case and going to use the rest for the power steering flush when the opportunity presents itself.
Senior User
Joined: Oct 2005
Posts: 309
Likes: 0
There are many folks on here who don't believe that the MERCON V is alright for the trannies that originally said use only MERCON.
If you look around, you'll find alot of both generic & name brands that, on the bottle, say MERCON/DEXRON-III and continue to use only that.
One popular argument for continuing to use only MERCON labeled fluid is said to be, that Ford waited till all the trannies that specified only MERCON were all out of warranty and then said, MERCON V is backwards compatibile.
Its a pretty good argument.
If you look around, you'll find alot of both generic & name brands that, on the bottle, say MERCON/DEXRON-III and continue to use only that.
One popular argument for continuing to use only MERCON labeled fluid is said to be, that Ford waited till all the trannies that specified only MERCON were all out of warranty and then said, MERCON V is backwards compatibile.
Its a pretty good argument.
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Posting Guru
Joined: Feb 2007
Posts: 1,327
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From: Las Vegas, NV
Power Steering uses Mercon V also, I just did my flush with P/S fluid, did I goof?
Post Fiend
Joined: Feb 2007
Posts: 14,541
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From: Dallas-Ft. Worth
You could also lift it, if you can do it safely.
Logistics Pro
Joined: Nov 2001
Posts: 3,787
Likes: 102
From: Georgia
Hey guys, as I recall the deal was that if you are going to change to mercon V make sure that everything is drained including the torque converter and cooler lines. Either mercon or mercon V were OK but not some of each. Does that ring any bells or am i just old and forgetful?
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
Hey guys, as I recall the deal was that if you are going to change to mercon V make sure that everything is drained including the torque converter and cooler lines. Either mercon or mercon V were OK but not some of each. Does that ring any bells or am i just old and forgetful?
Elder User
Joined: Aug 2007
Posts: 530
Likes: 0
From: Cabot, AR
How many quarts for the transfer case?