Transmission Fluid
Postmaster
Joined: Jan 2003
Posts: 4,417
Likes: 3
From: Durham, NC
Originally posted by pcorbin
Gentlemen -
This is an informative thread. My son-in-law is a certified GM mechanic and is about to service my auto tranny on my 01 F250 5.4 for the first time at 70K miles. The book says it holds 17.7 qts of Mercon ATF, but my son-in-law says he will only need maybe half of that to service it. I just bought Mobil ATF (not synthetic) that is advertised as meeting both GM fluid requirements and Ford Mercon. Being mindful of comments in this thread critical of this hybrid fluid, it the problem (whatever it is) made worse by mixing the hybrid with what is left in my tranny? So far, the tranny has been fine except for an occasional shudder on upshift that sounds like I'm running over center line markers.
Gentlemen -
This is an informative thread. My son-in-law is a certified GM mechanic and is about to service my auto tranny on my 01 F250 5.4 for the first time at 70K miles. The book says it holds 17.7 qts of Mercon ATF, but my son-in-law says he will only need maybe half of that to service it. I just bought Mobil ATF (not synthetic) that is advertised as meeting both GM fluid requirements and Ford Mercon. Being mindful of comments in this thread critical of this hybrid fluid, it the problem (whatever it is) made worse by mixing the hybrid with what is left in my tranny? So far, the tranny has been fine except for an occasional shudder on upshift that sounds like I'm running over center line markers.
Senior User
Joined: Jan 2003
Posts: 192
Likes: 0
From: Chesapeake, VA
I just changed my ATF w/Mobil 1, which is Mercon. It was not that hard to drain both the torque converter and drop the transmission pan. This took about 15 1/2 qts to refill my Expedition. My manual states it holds approx. 16 qts. So it was a pretty thorough change. The only place I could find Mobil 1 ATF locally was at Autozone.
Now, FYI, while at Autozone, I also saw that they carried Valvoline synthetic ATF, which was Mercon V.
Now, FYI, while at Autozone, I also saw that they carried Valvoline synthetic ATF, which was Mercon V.
Postmaster
Joined: Jan 2003
Posts: 4,417
Likes: 3
From: Durham, NC
Originally posted by khmorse
I just changed my ATF w/Mobil 1, which is Mercon. It was not that hard to drain both the torque converter and drop the transmission pan. This took about 15 1/2 qts to refill my Expedition. My manual states it holds approx. 16 qts. So it was a pretty thorough change. The only place I could find Mobil 1 ATF locally was at Autozone.
Now, FYI, while at Autozone, I also saw that they carried Valvoline synthetic ATF, which was Mercon V.
I just changed my ATF w/Mobil 1, which is Mercon. It was not that hard to drain both the torque converter and drop the transmission pan. This took about 15 1/2 qts to refill my Expedition. My manual states it holds approx. 16 qts. So it was a pretty thorough change. The only place I could find Mobil 1 ATF locally was at Autozone.
Now, FYI, while at Autozone, I also saw that they carried Valvoline synthetic ATF, which was Mercon V.
Check out this TSB for the CORRECT ATF to use:
http://www.ofoc.ca/garage/TSB%2001-15-7.pdf
Last edited by Bob Ayers; Jan 30, 2004 at 04:58 PM.
Senior User
Joined: Jan 2003
Posts: 192
Likes: 0
From: Chesapeake, VA
From the Mobil 1 website:
Applications
Mobil 1 Synthetic ATF is recommended for use in modern high performance automobiles, SUV's, SUT's, vans and other light trucks requiring Dexron III and Ford Mercon performance levels.
Specifications & Approvals
Mobil 1 Synthetic ATF has the following builder approvals:
Allison C-4
Ford Mercon
General Motors Dexron III
http://www.mobil.com/USA-English/Lub...ntheticATF.asp
Applications
Mobil 1 Synthetic ATF is recommended for use in modern high performance automobiles, SUV's, SUT's, vans and other light trucks requiring Dexron III and Ford Mercon performance levels.
Specifications & Approvals
Mobil 1 Synthetic ATF has the following builder approvals:
Allison C-4
Ford Mercon
General Motors Dexron III
http://www.mobil.com/USA-English/Lub...ntheticATF.asp
Postmaster
Joined: Jan 2003
Posts: 4,417
Likes: 3
From: Durham, NC
Originally posted by khmorse
From the Mobil 1 website:
Applications
Mobil 1 Synthetic ATF is recommended for use in modern high performance automobiles, SUV's, SUT's, vans and other light trucks requiring Dexron III and Ford Mercon performance levels.
Specifications & Approvals
Mobil 1 Synthetic ATF has the following builder approvals:
Allison C-4
Ford Mercon
General Motors Dexron III
http://www.mobil.com/USA-English/Lub...ntheticATF.asp
From the Mobil 1 website:
Applications
Mobil 1 Synthetic ATF is recommended for use in modern high performance automobiles, SUV's, SUT's, vans and other light trucks requiring Dexron III and Ford Mercon performance levels.
Specifications & Approvals
Mobil 1 Synthetic ATF has the following builder approvals:
Allison C-4
Ford Mercon
General Motors Dexron III
http://www.mobil.com/USA-English/Lub...ntheticATF.asp
Ford is very explicit in NOT USING ATF that is dual purpose (Dexron and Mercon)
Senior User
Joined: Jan 2003
Posts: 192
Likes: 0
From: Chesapeake, VA
From everything I have read, they are talking about dual purpose Mercon/Mercon V.
Unless you specifically buy Motorcraft, what other brand of Mercon ATF is not dual purpose w/Dexron?
I just went to the following websites, and all of the following brands are dual Mercon/Dexron:
Mobil
Mobil 1
Havoline
Valvoline
Quaker State
Pennzoil
Royal Purple
Castrol
Exxon
Shell
AdvanceAuto brand
Everyone had specific/different blends for Mercon/Dexron & Mercon V.
Unless you specifically buy Motorcraft, what other brand of Mercon ATF is not dual purpose w/Dexron?
I just went to the following websites, and all of the following brands are dual Mercon/Dexron:
Mobil
Mobil 1
Havoline
Valvoline
Quaker State
Pennzoil
Royal Purple
Castrol
Exxon
Shell
AdvanceAuto brand
Everyone had specific/different blends for Mercon/Dexron & Mercon V.
Last edited by khmorse; Jan 30, 2004 at 05:54 PM.
Postmaster
Joined: Jan 2003
Posts: 4,417
Likes: 3
From: Durham, NC
I have to agree with you, only Mercon 5 is separate!!!!!
I just checked the Motorcraft website, and Motorcraft Mercon is
ALSO Dexron III!!!
http://www.motorcraft.com/standard.a...M=44&PageID=74
I just checked the Motorcraft website, and Motorcraft Mercon is
ALSO Dexron III!!!
http://www.motorcraft.com/standard.a...M=44&PageID=74
Last edited by Bob Ayers; Jan 30, 2004 at 06:05 PM.
Senior User
Joined: Jan 2003
Posts: 192
Likes: 0
From: Chesapeake, VA
It's all good. The debate is fun. You got me thinking and I certainly wanted to make sure I did not add something I shouldn't have. I would have never gone to that many manufacturers looking if you had not questioned my post. I certainly know a little more now than I did a 1/2 hour ago.
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Senior User
Joined: Jan 2004
Posts: 108
Likes: 0
From: Chicago, IL
Re: Transmission Fluid
Originally posted by John with beastly 302
Hey,
So I'll be doing scheduled 20,000 mile Transmission fluid change in the sable soon. I'm Debating on what to use. I know chevron makes excellent products, How about there Dexron/Mercron Transmission Fluid Is it A group III Just asking for Some opinions and Facts.
Thanks
Oh ya Merry Christmas
Hey,
So I'll be doing scheduled 20,000 mile Transmission fluid change in the sable soon. I'm Debating on what to use. I know chevron makes excellent products, How about there Dexron/Mercron Transmission Fluid Is it A group III Just asking for Some opinions and Facts.
Thanks
Oh ya Merry Christmas
Last edited by therion; Jan 30, 2004 at 07:46 PM.
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