Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1973 - 1979 F-100 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 04-28-2009, 12:59 PM
ethomps ethomps is offline
Junior User
 
Join Date: Jan 2004
Location: Washington State
Posts: 83
ethomps is starting off with a positive reputation.
1977 F-150 = Correct Transmission Fluid?

Couldn't find a definitive answer.

I have a 1977 Ford F-150 w/ the original C6 automatic that was rebuilt by AMCO (by previous owner).

I am going to be replacing the hoses and the transmission fluid, hasn't been done since I've owned it, hoses are old, etc.

I am unsure what type to use. I believe the previous owner used the mercon ATF, I thought it needed the Type F fluid?

I am getting conflicting reports from the auto stores here in town as 1977 was the model year that Ford made changes to the type used?

So, what type is correct for my truck? Is it bad to run the mercon ATF? to run the Type F?

If the mercon type is wrong, do I need to flush it completely? Or can I just start adding Type F to it from here on out? (it is a bit low now). Is it bad to mix the two types?

Thanks for the help.

Eric
__________________
1977 F150 Ranger 4x4 Shortbed
Cinnamon Glow / Tan Interior
460 V8, C6 Auto, 4.11 Gears, Rancho lift, 33" Tires
Reply With Quote
  #2  
Old 04-28-2009, 03:17 PM
73FOMO's Avatar
73FOMO 73FOMO is offline
Posting Guru
 
Join Date: Aug 2005
Location: Hartford, AL
Posts: 1,290
73FOMO is gaining momentum as a positive member of FTE.
I was thinking Type F. Post in the tranny forum as well.
__________________
1973 Ford F100 Ranger 4x2 Reg Cab LWB 468, C6, 8.8 3.08 LS
1995 Ford F150 XLT 4x2 Reg Cab SWB - Stroked SEFI 352c.i. 5.0, Eagle Crank & Rods, Ported GT40 Heads, 1.7 FMS Roller Rockers, Manley RaceFlo Valves, Custom .060 Speed Pro Hyper Pistons, Comp 270HR, Ford Shorty Headers, 2.5 Mandrel Y, Magnaflow Duals, MSD, Moates QH/BE, Innovate LC1 Wideband, '03 4r70w, MarkVIII fan Conversion, Bosch EV6 24#, e85 Powered, 3.55 LS
Reply With Quote
  #3  
Old 04-28-2009, 03:37 PM
77f2504by4's Avatar
77f2504by4 77f2504by4 is offline
Posting Guru
 
Join Date: Jun 2004
Location: Dracut, Massachusetts
Posts: 1,115
77f2504by4 is gaining momentum as a positive member of FTE.
pull your tranny dipstick out. it should say what type of fluid to use on the dipstick, my 77 f250 says type f, but i have seen others that say to use mercon. but id do what the dipstick says. if it says nothing, id use type f. thats what all my trucks get.
__________________
Untill next time, I leave you with these words of wisdom...

------------------------------------------

NOTE TO ALL PREVIOUS OWNERS: STOP IT!!!
Reply With Quote
  #4  
Old 04-28-2009, 04:37 PM
crazedfox's Avatar
crazedfox crazedfox is offline
Senior User
 
Join Date: Aug 2008
Location: LaGrange
Posts: 429
crazedfox is starting off with a positive reputation.
Quote:
Originally Posted by ethomps View Post
I have a 1977 Ford F-150 w/ the original C6 automatic that was rebuilt by AMCO (by previous owner).
Use,
__the MERCON ATF; hence it was rebuilt.
Once the tranz has been rebuilt it can use the mercon atf.

If it hasn't been rebuilt, it will need TYPE F.

I repeat, you do not use the TYPE F fluid.
Use the MERCON ATF.

You CONNOT mix tranmission fluids, this is bad to do!
Any well educated transmission shop will tell you the same.
Reply With Quote
  #5  
Old 04-28-2009, 06:00 PM
Jermafenser Jermafenser is offline
Postmaster
 
Join Date: Jul 2001
Location: MD
Posts: 4,944
Jermafenser has a good reputation on FTE.Jermafenser has a good reputation on FTE.Jermafenser has a good reputation on FTE.
Wrong.

AS ORIGINALLY EQUIPPED:

1977 and later C4/6 uses Mercon from factory.

1976 and earlier uses Type F from factory.

This is written in stone.
Reply With Quote
  #6  
Old 04-28-2009, 07:40 PM
beartracks's Avatar
beartracks beartracks is offline
Postmaster
 
Join Date: Nov 2000
Location: Albuquerque
Posts: 4,401
beartracks is starting off with a positive reputation.
I believe the difference is in the newer clutches, seals etc. i.e. newer or rebuilt units would have the newer fluid. I do hear that type "F" only gives you stiffer shifts.
__________________
Bear Tracks

1977 F-100 Ranger XLT,400,C6,GV
Mod's Listed in Gallery

Click Here To Help Support FTE
Reply With Quote
  #7  
Old 04-28-2009, 10:30 PM
ford4life69's Avatar
ford4life69 ford4life69 is offline
Posting Guru
 
Join Date: Mar 2002
Location: Wolfforth
Posts: 1,876
ford4life69 is a name known to allford4life69 is a name known to allford4life69 is a name known to allford4life69 is a name known to allford4life69 is a name known to allford4life69 is a name known to all
i made this mistake. i read the books and assumed my auto was a c4 behind my 302. blew a cooler line *ghetto rigged i discovered* bought and put in type F and later correctly identified the c6 via the pan, changed the fluid and filter and have ran mercon ever since. haven't had any problems post rebuild *cooler was COMPLETELY clogged, hence the blown line* running mercon. as far as i've ever read, the c6 has always used mercon.
__________________
Thanx!
Connie

One child left...
'79 f100 "Silver Bullet" (my baby)
Reply With Quote
  #8  
Old 04-28-2009, 10:47 PM
shanes66charger shanes66charger is offline
Elder User
 
Join Date: Jan 2007
Posts: 741
shanes66charger is starting off with a positive reputation.
Quote:
Originally Posted by beartracks View Post
I believe the difference is in the newer clutches, seals etc. i.e. newer or rebuilt units would have the newer fluid. I do hear that type "F" only gives you stiffer shifts.
hence prolonging the life of your tranny. I run type F in everything.

OK everyone LET ME HEAR IT!
Reply With Quote
  #9  
Old 04-28-2009, 11:16 PM
77f2504by4's Avatar
77f2504by4 77f2504by4 is offline
Posting Guru
 
Join Date: Jun 2004
Location: Dracut, Massachusetts
Posts: 1,115
77f2504by4 is gaining momentum as a positive member of FTE.
Quote:
Originally Posted by shanes66charger View Post
hence prolonging the life of your tranny. I run type F in everything.

OK everyone LET ME HEAR IT!
i have to agree on type f in everything... all my trucks have always and will always get type f, both in transmission and powersteering... i have yet to have a problem resulting from useing type f.
__________________
Untill next time, I leave you with these words of wisdom...

------------------------------------------

NOTE TO ALL PREVIOUS OWNERS: STOP IT!!!
Reply With Quote
  #10  
Old 04-29-2009, 12:17 AM
smokeyb97's Avatar
smokeyb97 smokeyb97 is offline
Senior User
 
Join Date: Jan 2008
Location: Irondale, Al.
Posts: 427
smokeyb97 is starting off with a positive reputation.
Got a 79 C6 with over 205,000 miles, flushed twice using type F, never a problem and no leaks. While my engine is being rebuilt, I've had the tranny rebuilt also and will go back with type F unless the rebuilder says otherwise.
Reply With Quote
  #11  
Old 04-29-2009, 12:37 AM
NumberDummy's Avatar
NumberDummy NumberDummy is offline
Ford Parts Specialist
 
Join Date: Nov 2006
Location: Hacienda Heights CA
Posts: 56,247
NumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputationNumberDummy has a superb reputation
VERBATUM from the 1973/79 Ford Light Truck & Passenger Car Parts Catalogs:

XT-2QDX .. Automatic Transmission Fluid "MERCON"

For use in 1977/ C4 & C6 Automatic Transmissions.

The back slash after 1977 means 1977 and later.
__________________
Bill / Retired Ford Parts Manager / SoCal Chapter Member / Part number research: 1928/2001 trucks & 1928/89 passenger cars.

2013 Escape FWD 2.0L Eco-Boost
Reply With Quote
  #12  
Old 04-29-2009, 01:28 AM
smokeyb97's Avatar
smokeyb97 smokeyb97 is offline
Senior User
 
Join Date: Jan 2008
Location: Irondale, Al.
Posts: 427
smokeyb97 is starting off with a positive reputation.
Quote:
Originally Posted by NumberDummy View Post
VERBATUM from the 1973/79 Ford Light Truck & Passenger Car Parts Catalogs:

XT-2QDX .. Automatic Transmission Fluid "MERCON"

For use in 1977/ C4 & C6 Automatic Transmissions.

The back slash after 1977 means 1977 and later.
You're correct, after checking my records, I found I'm using Dextron II in the transmission and Type F in the power steering.
Reply With Quote
  #13  
Old 04-29-2009, 01:29 AM
bmarkline's Avatar
bmarkline bmarkline is offline
Elder User
 
Join Date: Jul 2008
Location: South Central PA
Posts: 522
bmarkline is starting off with a positive reputation.
Quote:
Originally Posted by NumberDummy View Post
VERBATUM from the 1973/79 Ford Light Truck & Passenger Car Parts Catalogs:

XT-2QDX .. Automatic Transmission Fluid "MERCON"

For use in 1977/ C4 & C6 Automatic Transmissions.

The back slash after 1977 means 1977 and later.
This is how I heard it too.
Reply With Quote
  #14  
Old 04-29-2009, 03:40 AM
crazedfox's Avatar
crazedfox crazedfox is offline
Senior User
 
Join Date: Aug 2008
Location: LaGrange
Posts: 429
crazedfox is starting off with a positive reputation.
Quote:
Originally Posted by Jermafenser View Post
Wrong.

AS ORIGINALLY EQUIPPED:

1977 and later C4/6 uses Mercon from factory.

1976 and earlier uses Type F from factory.

This is written in stone.
Ok,
__here we go again.

1. the shop that rebuilt it filled it with MERCON.

2. If an early make C4/C6 tranz is completly rebuilt you have a choice of what ATF you can use. (Later models use Mercon, As stated by N.D.)

What ATF you use depends what type of shift & life the tranz has.

MERCON : Softer shifts, thicker fluid, & longer life span.

Type F : Harder shifts, thinner fluid, & has a not so good life span.

I recived this infomation from a teacher & repair tech of transmissions of 30+ years.

He still repairs transmissions in his own shop, for extra cash.

I call him when I need infomation on any technical issues or just need a rebuild.

__________________________________________________ _____________

If you find any proof that I or my research is wrong, please prove it.

P.S. Stone can be broken'.
Reply With Quote
  #15  
Old 04-29-2009, 10:23 AM
73FOMO's Avatar
73FOMO 73FOMO is offline
Posting Guru
 
Join Date: Aug 2005
Location: Hartford, AL
Posts: 1,290
73FOMO is gaining momentum as a positive member of FTE.
I found this on Mobil 1's site for what it's worth. Personally I think I would go with the F for firmer shifts if it were mine.

Applications
The frictional characteristics of an automatic transmission fluid are an important factor in the design and operation of the transmission. All Ford Motor Company transmissions built prior to 1977, and certain models that continued in use during 1977-1980, were designed for a high-friction fluid that allowed the shifting clutches to lock up or engage quickly. Ford specification ESW-M2C33-F covers this type of product, which is commonly referred to as "Type F" fluid. Mobil ATF Type F is the appropriate product for these units.

These Ford vehicles are identified as:

All 1976 and earlier Ford, Lincoln, and Mercury models of cars, vans, and light trucks.

All 1977-1980 Ford models having either ESW-M2C33-F or no number at all stamped on the transmission dipstick.

Mobil ATF Type F is not recommended for automatic transmissions in Ford, General Motors, Chrysler, American Motors, or any other cars requiring a Dexron-II, Dexron-IIE, Dexron-III or Mercon-approved fluid, or for those Ford products requiring an M2C138CJ (Type CJ) fluid or an M2C166H (Type H) fluid. For the above applications, Mobil ATF D/M (Dexron/Mercon) or Mobil Multi-Vehicle ATF are recommended.
__________________
1973 Ford F100 Ranger 4x2 Reg Cab LWB 468, C6, 8.8 3.08 LS
1995 Ford F150 XLT 4x2 Reg Cab SWB - Stroked SEFI 352c.i. 5.0, Eagle Crank & Rods, Ported GT40 Heads, 1.7 FMS Roller Rockers, Manley RaceFlo Valves, Custom .060 Speed Pro Hyper Pistons, Comp 270HR, Ford Shorty Headers, 2.5 Mandrel Y, Magnaflow Duals, MSD, Moates QH/BE, Innovate LC1 Wideband, '03 4r70w, MarkVIII fan Conversion, Bosch EV6 24#, e85 Powered, 3.55 LS
Reply With Quote
Old 04-29-2009, 10:23 AM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Mercon V vs. Mercon III AmmoDawg Expedition & Navigator 2 01-08-2013 10:26 AM
Transfer case fluid type bigred66 Super Duty & Heavy Duty 10 08-21-2010 04:38 AM
Power Steering Fluid 2003 Ranger? Redranger03 Ranger & B-Series 4 10-01-2009 04:48 PM
92 Aerostar New PS Pump--still takes Type F! What gives? TallPaul Aerostar 17 02-22-2007 11:46 AM
Power Steering Fluid kntryboy 1997 - 2003 F150 3 11-27-2005 07:07 PM


Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1973 - 1979 F-100 & Larger F-Series Trucks

Tags
150, 1976, 1977, 77, 79, dextron, dipstick, f100, f150, fluid, ford, mercon, transmission, type, xt2qdx

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


Participate In The Forums

Create new posts and participate in discussions. It's free!

Sign Up »





All times are GMT -5. The time now is 05:23 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup