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2004 Mach 1 5 Speed Transmission.. Tranny Fluid?

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Old 05-09-2013, 09:53 PM   #1
Hob
 
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Default 2004 Mach 1 5 Speed Transmission.. Tranny Fluid?

I've read all over that our Mustangs use Dexron III but the only Dexron I see at Autozone is Dexron VI?

Is this what I should be using on my 5 speed transmission flush?
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Old 05-09-2013, 10:22 PM   #2
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Back in 2003/2004, Ford specified MERCON III ATF in the Tremec 3650 5 speed transmission in your Mach 1. Now, Ford specifies MERCON V for all applications requiring MERCON III.

Tremec, the manufacturer of the 3650 specifies Mobil 1 ATF OR DEXRON III. See page 8 of the Tremec 3650 Service Manual:

http://www.ttcautomotive.com/English...ice_Manual.pdf

Note that Tremec specifies 3.8 liters of ATF.

Ford has since revised its fluid capacity for the 3650 to 3.0 liters:

http://www.stangnet.com/images/stori...s/04-15-06.pdf

A lot of guys run synthetic manual transmission oil, but I avoid it. According to a Tremec engineer I spoke with, some of the materials used in the 3650 specifically require an ATF.

Last edited by Sonic Mustang; 05-09-2013 at 10:38 PM.
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Old 05-09-2013, 11:11 PM   #3
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Exactly what I needed to know. Thank you sir for the updated information!

Additionally I have another question.... I've read that the Mercon V is used in the power steering system as well is this correct on these generation Mustang?

Last edited by Hob; 05-09-2013 at 11:29 PM.
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Old 05-10-2013, 12:34 AM   #4
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Quote:
Originally Posted by Hob View Post
Exactly what I needed to know. Thank you sir for the updated information!

Additionally I have another question.... I've read that the Mercon V is used in the power steering system as well is this correct on these generation Mustang?
Mercon V is the replacement for Mercon III for all applications calling for Mercon III.

Mercon V has been in my power steering system for years.
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Old 05-10-2013, 03:01 AM   #5
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I have had best results with my '03 GT running Mobil 1 ATF (3.0 L), much smoother shifts than with GM Syncromesh or RP Synchromax...
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Old 05-10-2013, 05:51 AM   #6
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Great thread, any other options for 3.7 auto's?
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Old 05-10-2013, 08:57 AM   #7
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Quote:
Originally Posted by audioAl View Post
Great thread, any other options for 3.7 auto's?
I bet someone in the 2005-2013 section might have some...
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