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Old Jun 13, 2007 | 10:34 PM
  #1  
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Trans fluid question

I have an 03 f350 7.3L w/5spd auto. I seem to get conflicting info on what type of trans fluid is in this truck. I do some towing and plowing and it's due for a fluid change but one mechanic says it has synthetic from the factory another claims it doesn't. I really don't care what I have to put in it, I just would like to know for sure what should be used. Any advice is appreciated, thanks
 
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Old Jun 14, 2007 | 08:24 AM
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I don't have my manual with me....I have an 03 too.

Call the dealership, ask for the parts dept and ask them. If there are any further questions, ask to be transferred to the service dept.
 
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Old Jun 14, 2007 | 10:42 AM
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First, are you sure you have the 5 speed? I thought the Torqshift only came with the 6.0L?

According to the owners guide the 4 speed automatic takes Mercon transmission fluid, the 5 speed Torqshift automatic takes Mercon SP.

Here is a link to the Motorcraft site where you can look at your manual.
http://www.motorcraftservice.com/vdi...&VEHICLE=F-350
 
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Old Jun 14, 2007 | 02:51 PM
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If you have the 7.3 then you have the 4 speed auto. Beerstalker is correct, in '03 the Torqshift was unique to the 6.0. Make sure you find out the correct fluid for sure and dont use anything else.
 
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Old Jun 14, 2007 | 03:05 PM
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According to the owner's manual, it was possible to get a 5 speed torqueshift in 2003.

http://www.analogstereo.com/pdf/om/f...anual_2003.pdf

See chart on page page 255.

It also says, on page 256:

Ensure the correct automatic transmission fluid is used. Transmission fluid requirements are indicated on the end of the dipstick. Check the container to verify the fluid being added is of the correct type. Refer to your scheduled maintenance guide to determine the correct service interval.


So, look at your dipstick.
 
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Old Jun 14, 2007 | 03:39 PM
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it takes mercon IV. it is synthetic
 
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Old Jun 14, 2007 | 03:49 PM
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Elmo where did you get that?

I went right to the 03 owners guide where it states regular Mercon for the 4 speed (which I'm pretty sure he has with the 7.3L), and Mercon SP for the 5 speed Torqshift (which I am 99% sure only comes with the 6.0L).
 
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Old Jun 14, 2007 | 06:08 PM
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Thanks for all the responses.
This has been a big help.

I checked the dipstick and all it says is to "use mercon" on the handle in fine print so I'd say I was mistaken and it's the 4 speed. Sorry about the mis-information.
I get what seems like 4 distinct shifts and was told it's probably the 5 speed.

I'll double check with a dealer but just to be sure is there any way to tell by the VIN or a difference in the 4/5 speed housings that a quick visual check would show?

Hate to be a pain but with the conflicting opinions from local mechanics (probably because of the 4 to 5 speed difference??) I guess it's best to be sure what trans it has before it's changed. Thanks again
 
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Old Jun 14, 2007 | 07:18 PM
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Ford has replaced all Mercon applications with Mercon V. If you can find Mercon on the shelf it is old inventory.
 
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Old Jun 14, 2007 | 07:25 PM
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Originally Posted by Edkajo
Thanks for all the responses.
This has been a big help.

I checked the dipstick and all it says is to "use mercon" on the handle in fine print so I'd say I was mistaken and it's the 4 speed. Sorry about the mis-information.
I get what seems like 4 distinct shifts and was told it's probably the 5 speed.

I'll double check with a dealer but just to be sure is there any way to tell by the VIN or a difference in the 4/5 speed housings that a quick visual check would show?

Hate to be a pain but with the conflicting opinions from local mechanics (probably because of the 4 to 5 speed difference??) I guess it's best to be sure what trans it has before it's changed. Thanks again

You can use Mercon V or the plain old Mercon in your tranny. You have the 4R100 4 speed auto.
 
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Old Jun 14, 2007 | 07:27 PM
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slc is correct. Ford uses Mercon V. I have run Mercon V for the last two fluid changes.
 
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Old Jun 16, 2007 | 09:19 AM
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<TABLE cellSpacing=10 cellPadding=0 width="90%" border=0><TBODY><TR><TD>TSB 06-14-4

07/24/06

MERCON ATF IS BEING REPLACED BY MERCON V
ATF AS A SERVICE FLUID.

FORD:
1980-1997 Crown Victoria
1981-1997 Mustang, Thunderbird
1981-2003 Escort
1986-1993 Festiva
1986-1997 Taurus
1989-1997 Probe
1994-1997 Aspire
1995-2000 Contour
1980-1996 Bronco
1981-2003 F-150
1981-2004 E-Series, F-Super Duty
1983-1996 Ranger
1986-1996 Aerostar
1991-1997 Explorer
1993-2004 F-53 Motorhome Chassis
1995-1998 Windstar
1997-2004 Expedition
2000-2005 Excursion
2001-2007 Escape
1987-2000 F-B-Series
2000-2007 F-650, F-750

LINCOLN:
1980-1997 Town Car
1981-1997 Continental
1993-1997 Mark VIII
1998-2004 Navigator
2002-2003 Blackwood

MERCURY:
1980-1997 Grand Marquis
1981-1997 Cougar
1986-1997 Sable
1987-1999 Tracer
1995-2000 Mystique
1999-2002 Cougar
1993-2002 Villager
1997 Mountaineer
2005-2007 Mariner

MERKUR:
1985-1989 XR4TI

This article supersedes TSB 01-15-7 to update the vehicle application chart.

ISSUE
MERCON(R) Automatic Transmission Fluid is being replaced by MERCON(R) V as a service

here is the tsb.
this is where i got my information
</TD></TR></TBODY></TABLE>
 
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Old Jun 18, 2007 | 03:24 PM
  #13  
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Ok, you had a typo before. It's Mercon V not Mercon IV.

Thanks for posting that TSB though, I will keep that in mind in the future.
 
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Old Jun 18, 2007 | 05:02 PM
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Originally Posted by Edkajo
.....I'll double check with a dealer but just to be sure is there any way to tell by the VIN or a difference in the 4/5 speed housings that a quick visual check would show?
If it's a 7.3L it's a 4R100. 5R110w's became available only with the 6.0L.

Take Care
 
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Old Jun 20, 2007 | 12:53 PM
  #15  
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Originally Posted by redford
According to the owner's manual, it was possible to get a 5 speed torqueshift in 2003.

http://www.analogstereo.com/pdf/om/f350_owners_manual_2003.pdf

See chart on page page 255.

It also says, on page 256:

Ensure the correct automatic transmission fluid is used. Transmission fluid requirements are indicated on the end of the dipstick. Check the container to verify the fluid being added is of the correct type. Refer to your scheduled maintenance guide to determine the correct service interval.


So, look at your dipstick.
You could get the torqshift in 2003, but ONLY with the 6.0. like Btravelen said.
 
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