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Topic Review (Newest First)
07-26-2013 08:09 AM
Trans Lube

The Ford synthetic lube is by far the best option. I have a local auto parts store that is a Motorcraft dealer-they don't stock it but will get it (same day) for about $17 a quart. You only have to change it at 100,000 mi intervals.
07-26-2013 06:07 AM
proper fill quantity

I just changed my factory tranny fluid with the OE-type QS and would like to state for the record that my '07 2.0 duratec with MTX-75 5spd was factory-filled with exactly 2.2 quarts of fluid. I believe the 2.1 value is either obsolete, a min spec or flat wrong. The same conclusion has been reached on a number of Mazda forums.

Here's how I know:

The tranny fluid in my 2007 car has never been touched until this week. I set my car on jackstands using a carpenter's level on the rocker panels and bumpers. It was level with in a fraction of a degree right to left and front to rear. Then I removed the tranny fill plug and NO fluid came out. Then I removed the drain plug and captured the fluid in a clean, dry pan. Then I measured the fluid removed using my wife's premium measuring cup. The quantity removed was found to be a fraction over 2qts plus 6 ounces. I then poured 2qts plus 6 oz of fluid into my tranny and it was topped off, no extra dripped out. For those who aren't sure...6oz is about 1/5 of a quart (nearly 1 cup).

PS: as a very last step, I poured the used fluid into the emptied new quart bottles. Sure enough, it was 2 qts plus 6 oz. My tranny has no leaks.

Conclusion: 2 qts is a whopping 10% less than the factory fill level on my 2007 Focus car. In my opinion, folks who are only using 2 qts are risking premature tranny failure. In addition, the 2.1 value listed in the factory literature is 5% less than the tranny allows and considerably less that what Ford put in my tranny when new. Tranny plugs are positioned at the proper level to allow excess fluid to drain out. There should be no reason to under-fill below the hole. If a specification ever existed to have oil filled to some level below the fill hole, I suspect this was a "safe minimum value".
02-03-2013 02:40 PM
Originally Posted by PRSman25 View Post
Thats like a million dollars though!
To replace the transmission costs like 5 million dollars though!
02-03-2013 02:39 PM
Originally Posted by PRSman25 View Post
What is the proper type of transmission fluid for an MTX-75?
I've been looking around and have found that 75w-90 would work.
But what is "safe" for the transmission?
Regular 75W-90 gear lube is not recommended for this transmission and will destroy it.
01-30-2013 02:44 PM
freemind The Ford honey is made in Germany FWIW
01-30-2013 02:17 PM
PRSman25 That's basically diesel oil correct? Or is there a 50w gear oil?

Edit: I found the fluid. Delvac 50 weight manual transmission fluid.
Now, where do you get it?
01-30-2013 11:27 AM
1turbofocus I use Mobile Syn 50wt oil in all the MTX-75 I do

01-30-2013 09:47 AM
PRSman25 Oh yeah I'm definitely doing it myself. It's too simple not to.
01-30-2013 08:57 AM
Kipp if you can do the work yourself (it's not that hard) then $50 really isn't that much. a shop would charge five times that much to do it for you. and as said above; it's well worth the cost to get the right fluid now rather than have it break on you later and need a lot more money to fix it.
01-30-2013 08:53 AM
gondorian It isn't lifetime, it's 100,000 miles. But make sure that you call around if there is more than one dealer near you. I had a price difference of $5 a quart (26 vs. 21) between the three dealers withing 8 miles of me.
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