Notices
1994.5 - 1997 7.3L Power Stroke Diesel  

Quick ATF question!!

Old May 12, 2009 | 08:15 PM
  #1  
YZGUYONE25's Avatar
YZGUYONE25
Thread Starter
|
Freshman User
Joined: Jul 2006
Posts: 37
Likes: 0
Quick ATF question!!

Okay... I need to service my tranny as I am unsure of the miles since last service. I got the filter and about 8 quarts of Mercon V. Then I found out about draining the TC and figured it needs more! So, my buddy gave me a case of Dexron III/Mercon.

My question... can I mix the two, Mercon V and Dexrom III/Mercon??? I am dumb when it comes to these fluids. Also would rather spending another $50 for 10 more quarts of ATF!

Thanks!
Turtle
 
Reply
Old May 12, 2009 | 08:24 PM
  #2  
don77's Avatar
don77
Senior User
Joined: Dec 2008
Posts: 351
Likes: 0
i wouldnt mix them myself but it hold about 16 quarts
 
Reply
Old May 12, 2009 | 11:12 PM
  #3  
c00nhunterjoe's Avatar
c00nhunterjoe
Lead Driver
15 Year Member
Joined: May 2007
Posts: 8,608
Likes: 13
From: Belair md
you can mix them. they dont even make dexron III anymore. you buy merc V and it is suitable fore all fluids now.
 
Reply
Old May 12, 2009 | 11:49 PM
  #4  
YZGUYONE25's Avatar
YZGUYONE25
Thread Starter
|
Freshman User
Joined: Jul 2006
Posts: 37
Likes: 0
Good answer Joe! I was hoping I would be able to mix them. I guess tomorrow morning I will drain the fluid and attempt the infamous mod for my shifts!

Thanks.
 
Reply
Old May 13, 2009 | 01:52 AM
  #5  
joe_13894's Avatar
joe_13894
Fleet Mechanic
15 Year Member
Joined: Aug 2007
Posts: 1,508
Likes: 2
From: The boonies by Dallas OR
Some tips on changing the fluid.

You can disconnect the fluid line from the rear of the transmission and lead it to a bucket with a 5/16 plastic tube. Then run the engine until the fluid runs out. That lets you drop the pan without dealing with 12 quarts in the pan.

After you dump the pan, drain the TC by pulling the plug. Disconnect the front cooler line and then blow compressed air into the front cooler fitting on the transmission. This will blow out the pump and the passages to the TC. Then blow out the cooler, and finally blow out the lube passages by blowing into the rear cooler return. Doing this will get a LOT more fluid out than just draining the pan and TC.
 
Reply


Thread Tools
Search this Thread

All times are GMT -5. The time now is 08:49 AM.

story-0
10 Ugly Ford Trucks That We Still Kinda Love

Slideshow: 10 ugly Ford trucks that we still kinda love.

By Joe Kucinski | 2026-06-03 09:51:16


VIEW MORE
story-1
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-03 15:43:58


VIEW MORE
story-2
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-06-03 11:38:36


VIEW MORE
story-3
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-4
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-5
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-6
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-7
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-8
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-9
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