Notices
1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck
Sponsored by:
Sponsored by: Moser

Transmission

Thread Tools
 
Search this Thread
 
Old Jan 26, 2015 | 08:02 PM
  #1  
Tcook1687's Avatar
Tcook1687
Thread Starter
|
New User
Joined: Jan 2015
Posts: 15
Likes: 0
Transmission

I just bought a 75 Ford F-250 runs great. Lost forward movement when driving it to my apartment after purchase . And it had dumped fluid a couple of times . Previous owner installed a auxiliary oil cooler . What could cause this and where could I look to fix it . 1975 ford f250 360 motor c6 trans
 
Reply
Old Jan 26, 2015 | 08:30 PM
  #2  
HIO Silver's Avatar
HIO Silver
Fleet Owner
Joined: Dec 2009
Posts: 20,678
Likes: 82
From: NorCal
This is probably overly obvious but verify the tranny's fluid level.
 
Reply
Old Jan 26, 2015 | 09:58 PM
  #3  
51M1's Avatar
51M1
Senior User
Joined: Aug 2012
Posts: 215
Likes: 0
Park it on the street till you confirm it isnt leaking. Tranny fluid is a bitch to clean up. Park on gravel if possible.
 
Reply
Old Jan 27, 2015 | 05:20 AM
  #4  
Tcook1687's Avatar
Tcook1687
Thread Starter
|
New User
Joined: Jan 2015
Posts: 15
Likes: 0
I have parked it. Just wanted to know where all should I check for leakage. I'm not fimiliar with the c6 transmission . I've owned a 84 ford ranger and 87 ford 150 both were manual transmissions . I'm new to working on automatics
 
Reply
Old Jan 27, 2015 | 11:09 AM
  #5  
77&79F250's Avatar
77&79F250
Moderator & parts slinger
Veteran: Army
15 Year Member
Community Builder
Liked
Joined: Feb 2007
Posts: 50,096
Likes: 5,757
From: S/W Missouri, Polk county
Club FTE Gold Member
I take it had the correct amount of fluid before the test drive? And it worked fine on the test drive?

Dumped fluid from where? Where does it appear to be leaking from?

Did you get a 30 day handshake warranty or more like a "tail light" warranty (when the PO can't see the tail lights anymore), the warranty is over?

X2 on ck the fluid properly, but ck it first before trying to drive it anymore. Park it on level ground and follow the instructions on the dip stick.

Hot, in park....read the hash marks. Worse case before you take it to a trans shop, do a fluid and filter change.
 
Reply
Old Jan 27, 2015 | 07:06 PM
  #6  
Tcook1687's Avatar
Tcook1687
Thread Starter
|
New User
Joined: Jan 2015
Posts: 15
Likes: 0
Originally Posted by 77&79F250
I take it had the correct amount of fluid before the test drive? And it worked fine on the test drive?

Dumped fluid from where? Where does it appear to be leaking from?

Did you get a 30 day handshake warranty or more like a "tail light" warranty (when the PO can't see the tail lights anymore), the warranty is over?

X2 on ck the fluid properly, but ck it first before trying to drive it anymore. Park it on level ground and follow the instructions on the dip stick.

Hot, in park....read the hash marks. Worse case before you take it to a trans shop, do a fluid and filter change.
Dumped fluid from the passenger side of the
 
Reply
Old Jan 27, 2015 | 07:31 PM
  #7  
Tcook1687's Avatar
Tcook1687
Thread Starter
|
New User
Joined: Jan 2015
Posts: 15
Likes: 0
Originally Posted by 77&79F250
I take it had the correct amount of fluid before the test drive? And it worked fine on the test drive?

Dumped fluid from where? Where does it appear to be leaking from?

Did you get a 30 day handshake warranty or more like a "tail light" warranty (when the PO can't see the tail lights anymore), the warranty is over?

X2 on ck the fluid properly, but ck it first before trying to drive it anymore. Park it on level ground and follow the instructions on the dip stick.

Hot, in park....read the hash marks. Worse case before you take it to a trans shop, do a fluid and filter change.
It appears that have came from a old line between transmission and transmission oil cooler line. On passenger side. And warranty was tail lights which is fine it's not my primary driver any way so I can work on in my free time. The fluid that came out is black. So any pointers there would be great everyone is telling me I can't change the fluid or it will not drive agian.
 
Reply
Old Jan 27, 2015 | 07:50 PM
  #8  
77&79F250's Avatar
77&79F250
Moderator & parts slinger
Veteran: Army
15 Year Member
Community Builder
Liked
Joined: Feb 2007
Posts: 50,096
Likes: 5,757
From: S/W Missouri, Polk county
Club FTE Gold Member
Originally Posted by Tcook1687
Dumped fluid from the passenger side of the
the....?

Originally Posted by Tcook1687
It appears that have came from a old line between transmission and transmission oil cooler line. On passenger side.

And warranty was tail lights which is fine it's not my primary driver any way so I can work on in my free time. The fluid that came out is black. So any pointers there would be great everyone is telling me I can't change the fluid or it will not drive agian.
Did you buy it with a good transmission or a questionable one? Might not matter now, cause you are paying for the work for sure.

Black fluid is burnt fluid can ='s bad news. I'd change the filter, flush it ...and the converter, and the cooler, slack ck the bands and button it back up and hope for the best.
 
Reply
FTE Stories

Ford Trucks for Ford Truck Enthusiasts

story-0

Ford's 2001 Explorer Sportsman Concept Looks For a New Home

 Verdad Gallardo
story-1

10 Best Ford Truck Engines We Miss the Most!

 Joe Kucinski
story-2

2026 Shelby F-150 Off-Road: Better Than a Raptor R?

 Brett Foote
story-3

2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

 Michael S. Palmer
story-4

10 Most Surprising 2026 Ford Truck Features!

 Joe Kucinski
story-5

Top 10 Ford Trucks Coming to Mecum Indy 2026

 Brett Foote
story-6

5 Best / 5 Worst Ford Truck Wheels of All Time

 Joe Kucinski
story-7

Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

 Joe Kucinski
story-8

Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

 Michael S. Palmer
story-9

The Best F-150 Deal of Every Trim Level (XL through Raptor)

 Joe Kucinski
Old Jan 27, 2015 | 08:06 PM
  #9  
Tcook1687's Avatar
Tcook1687
Thread Starter
|
New User
Joined: Jan 2015
Posts: 15
Likes: 0
Originally Posted by 77&79F250
the....?



Did you buy it with a good transmission or a questionable one? Might not matter now, cause you are paying for the work for sure.

Black fluid is burnt fluid can ='s bad news. I'd change the filter, flush it ...and the converter, and the cooler, slack ck the bands and button it back up and hope for the best.
Thanks . Final questions where can I get the vin number decoded and how many qts are fill up and can I add the Lucas transmission fix as well
 
Reply
Old Jan 27, 2015 | 08:59 PM
  #10  
mikeo0o0o0's Avatar
mikeo0o0o0
Hotshot
15 Year Member
Liked
Loved
Community Favorite
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
Club FTE Gold Member
Originally Posted by Tcook1687
Thanks . Final questions where can I get the vin number decoded and how many qts are fill up and can I add the Lucas transmission fix as well
Post your VIN, in fact post your complete warranty plate (metal plate riveted to the driver's door) and I can decode it for you.
No idea on C6 capacity, I'm 1400 miles from my shop manuals right now.
 
Reply
Old Jan 27, 2015 | 09:25 PM
  #11  
77&79F250's Avatar
77&79F250
Moderator & parts slinger
Veteran: Army
15 Year Member
Community Builder
Liked
Joined: Feb 2007
Posts: 50,096
Likes: 5,757
From: S/W Missouri, Polk county
Club FTE Gold Member
Like mikeo0o0o0 said, post it here and he will decode it.

1. If the converter is dry then these will hold about 10 qts. If the converter is not drained and you are dropping the pan put 5 quarts in and check it. Depending on how long the pan is off it could take up to 7 quarts. You just have to add fluid a half quart at a time after the inital 5 quarts.

2. The C-6 also has a very large fluid capacity at 24 pints, including the fluid in the torque converter. 24 pints ='s 12 qts.

3. I looked in my 1979 Ford Truck shop manual on draining and refilling the C6 and it says to add 3 quarts of fluid after you remove the pan, drain the old fluid, and re-install the pan. My Haynes manual for '73-'79 Ford Trucks says to add a little fluid at a time since fluid capacities can vary and to use 4 to 5 pints as a starting point. Don't forget to use a new gasket.

4. Just dropping the pan and changing the fluid and filter. I'd start out with 4 quarts, start it up, then fill to level.
 
Reply
Old Jan 28, 2015 | 04:18 AM
  #12  
NumberDummy's Avatar
NumberDummy
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 783
From: Simi Valley, CA
Club FTE Gold Member
C6 = Approx. 13 quart capacity. 1966/76: Type F / 1977/ Mercon.
 
Reply
Old Jan 28, 2015 | 08:48 AM
  #13  
Tcook1687's Avatar
Tcook1687
Thread Starter
|
New User
Joined: Jan 2015
Posts: 15
Likes: 0
Originally Posted by mikeo0o0o0
Post your VIN, in fact post your complete warranty plate (metal plate riveted to the driver's door) and I can decode it for you.
No idea on C6 capacity, I'm 1400 miles from my shop manuals right now.
F25YCW26592
 
Reply
Old Jan 28, 2015 | 06:28 PM
  #14  
NumberDummy's Avatar
NumberDummy
Ford Parts Specialist
Joined: Nov 2006
Posts: 88,826
Likes: 783
From: Simi Valley, CA
Club FTE Gold Member
Originally Posted by Tcook1687
F25YCW26592
F25 = F250 2WD Pickup.

Y = 360 2V

C = Oakville Ontario Canada Truck Assembly Plant.

W26592 = 1975.

Trucks assembled in Canada were also sold in the US, could have been ordered by the Atlanta & Pittsburgh Ford district sales offices, possibly other offices as well.

DSO code stamped on the 3rd line-far right of the Warranty Plate, will decode to the office your truck was ordered from.

If 14 = Pittsburgh, if 21 = Atlanta. If another code, post what it is.
 
Reply
Old Jan 28, 2015 | 08:29 PM
  #15  
mikeo0o0o0's Avatar
mikeo0o0o0
Hotshot
15 Year Member
Liked
Loved
Community Favorite
Joined: Apr 2009
Posts: 14,333
Likes: 247
From: Stanley, VA
Club FTE Gold Member
Good evening Bill, I see you beat me to it .
Long day at work. Had to sit out yesterday because of the blizzard.
 
Reply



All times are GMT -5. The time now is 07:20 AM.

story-0
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-1
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-2
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE
story-3
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!

Slideshow: Everything You Need to Know about the 2027 Super Duty Carhartt Package!

By Michael S. Palmer | 2026-05-07 17:51:06


VIEW MORE
story-4
10 Most Surprising 2026 Ford Truck Features!

Slideshow: 10 most surprising Ford truck options/features in 2026.

By Joe Kucinski | 2026-05-05 11:17:22


VIEW MORE
story-5
Top 10 Ford Trucks Coming to Mecum Indy 2026

Slideshow: Here are the top 10 Fords coming to Mecum Indy 2026.

By Brett Foote | 2026-05-04 13:49:49


VIEW MORE
story-6
5 Best / 5 Worst Ford Truck Wheels of All Time

Slideshow: The 5 best and 5 worst Ford truck wheels of all time

By Joe Kucinski | 2026-04-29 16:49:01


VIEW MORE
story-7
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!

Slideshow: Ranking the 5 things owners love about their Super Duty and 5 things they don't

By Joe Kucinski | 2026-04-29 16:36:49


VIEW MORE
story-8
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!

Slideshow: Ranking all 12 Ford truck engines available in 2026.

By Michael S. Palmer | 2026-04-22 13:32:20


VIEW MORE
story-9
The Best F-150 Deal of Every Trim Level (XL through Raptor)

Slideshow: The best Ford F-150 deal for every trim level (XL through Raptor)

By Joe Kucinski | 2026-04-21 15:59:01


VIEW MORE