Self Tranny Flush
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From: Wyoming
Self Tranny Flush
Hey guys, I need to flush my tranny again (automatic) and really hate to pay my dealer 300 dollars to do it again, Someone was saying you can do it yourself by disconnecting one of the lines and running the truck...... Im not sure how true this is or how exactly to do it. Any ideas??
Thanks, Adam
Thanks, Adam
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From: Memphis, TN
Lead Driver
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From: Hartford, WI
When I was at BTS, they dropped the pan and change the filter. Overfilled it by 4 quarts. Removed the return line from the trans cooler, stuck it to a pail and turned the engine on. When it pumped out 4 quarts, they stopped, refilled it another 4 quarts and started the engine again. Stopped when they had 4 quarts. Hook line back up and started the truck to fill it up.
Post Fiend
Joined: Feb 2007
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From: Dallas-Ft. Worth
I just did this myself. I didn't have a graduated bucket, so I guessed. I guessed too little because I ended up not pumping enough out and kept putting more in. It eventually came out the open port on the side and made a mess on the driveway. I like the idea of pumping into a gallon jug or something so you know exactly what came out. I'll do that next time. I ended up using just under 17 quarts when I called it done. I didn't want to pump too much out and be left dry. Another good reason to know exactly what you pumped out.
Take your time, and it will go fine. By the time I got to that phase, I had already pulled, modified, & reinstalled both valve bodies and was in a hurry to get it done. It ended up okay, but next time will go much better.
Take your time, and it will go fine. By the time I got to that phase, I had already pulled, modified, & reinstalled both valve bodies and was in a hurry to get it done. It ended up okay, but next time will go much better.
Laughing Gas
Joined: Jan 2004
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From: Prince George, BC
i just did this about a month ago folowing the 7point3 deal and it wirked out fine, i used and empty jug (two actually) for the used oil that came out until i saw bubbles. and with that i was able to measure what came out and filled the other empty jug with new oil to the same amount i pumped out so i always knew how much i neede. at the end i drive my truck around for about 10 miles and then checked the dipstick and i had to add about one quart to get it to the right level. it was quite easy to do
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From: Wyoming
Thanks guys. Hey Mark, Ive heard of a few tranny builders that swear by running Type F fluid instead of Mercon.. Any reason for that?
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Lead Driver
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From: Hartford, WI
Type F is as old as I am. Not sure I want something 40 yrs old, design wise in my trans. I'd rather have something newer.
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Frmr Ford Trans Engr
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From: SE Florida
Type F doesn't have friction modifier in it. The clutches will grab much harder. It's not good for them, and Type F doesn't have the lubricity additives, either, so the trans will wear out sooner, too.
Some racers still use it because they don't mind rebuilding frequently, and they need the added grip on the clutches.
Some racers still use it because they don't mind rebuilding frequently, and they need the added grip on the clutches.
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Originally Posted by Mark Kovalsky
That article is a little bit outdated, and I should know, I wrote it for TheDieselStop!
MERCON V has now replaced MERCON, so ignore where it says not to use MERCON V. That's outdated information.l
MERCON V has now replaced MERCON, so ignore where it says not to use MERCON V. That's outdated information.l
Thanks in advance.
Frmr Ford Trans Engr
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From: SE Florida
Yes, use MERCON V.
The filter is good for the life of the trans. I change mine every other fluid change, but that's just repeating what I wrote in the article. You should read it, it has all the answers.
Yes, the line to the rear of the trans is the one to remove. That's in the article, too.
You don't need to have the shifter in each position each time the engine runs. You should get to all positions during the complete change.
The filter is good for the life of the trans. I change mine every other fluid change, but that's just repeating what I wrote in the article. You should read it, it has all the answers.
Yes, the line to the rear of the trans is the one to remove. That's in the article, too.
You don't need to have the shifter in each position each time the engine runs. You should get to all positions during the complete change.
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Originally Posted by Mark Kovalsky
Yes, use MERCON V.
The filter is good for the life of the trans. I change mine every other fluid change, but that's just repeating what I wrote in the article. You should read it, it has all the answers.
Yes, the line to the rear of the trans is the one to remove. That's in the article, too.
You don't need to have the shifter in each position each time the engine runs. You should get to all positions during the complete change.
The filter is good for the life of the trans. I change mine every other fluid change, but that's just repeating what I wrote in the article. You should read it, it has all the answers.
Yes, the line to the rear of the trans is the one to remove. That's in the article, too.
You don't need to have the shifter in each position each time the engine runs. You should get to all positions during the complete change.
Thank you for your response. I apologize for the repetitive questions that you have already covered in your article. The only thing I have the dealer do, is the ATF change. I just want to get it right when I do it my first time.
With that said, is there a certain brand of Mercon V that is better than the rest?
Thank you....
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From: Hartford, WI
Originally Posted by Mark Kovalsky
The filter is good for the life of the trans.
Frmr Ford Trans Engr
Joined: Aug 1999
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From: SE Florida
I figure that by looking at MANY filters that had many, many miles on them. One filter I inspected had 349,000 miles on it and the trans was still working fine. The only reason the trans was removed at that mileage is the ambulance that it was in was totalled.
The filter in a trans is not very fine. The really fine stuff that can clog a filter don't get caught by this filter, so they very rarely clog.
If the filter picks enough enough crud that it makes a difference in it's flow, the trans has already failed. If you're changing that filter, everything else inside the trans needs changing, too.
Also, read your owner's manual. What does it state for transmission filter change interval? Don't look too hard, it isn't listed because Ford doesn't recommend a change!
Having said all that, did you miss the part where I said I change mine every other change?
The filter in a trans is not very fine. The really fine stuff that can clog a filter don't get caught by this filter, so they very rarely clog.
If the filter picks enough enough crud that it makes a difference in it's flow, the trans has already failed. If you're changing that filter, everything else inside the trans needs changing, too.
Also, read your owner's manual. What does it state for transmission filter change interval? Don't look too hard, it isn't listed because Ford doesn't recommend a change!
Having said all that, did you miss the part where I said I change mine every other change?
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From: Wyoming
so just to follow up I did this flush procedure and it worked perfectly. I used a total of just under 20 qts. I did it by myself, I used a large bucket and a piece of fuel line wired to the bucket to hold it. Spent 100 bucks instead of a dealers price of 300 bucks. So definatly worth it! Thanks guys.