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Old 12-12-2007, 08:42 AM   #1
Djmike2485
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MTX Fluid Change? Coolant Flush?

Ok, so yesterday I had the zetec in for it's oil change, new shop, I'm at school and in previous years were able to go home before it's due. It's approaching 90,000mi and of course the shop noticed it. They gave me a list of things that they and Ford recommend doing to keep it running well, so sweet of them. One of the things on that list was to change the transmission fluid. I have a mtx, and my knowledge of mtx's is not much. My question to you, do I need to change it? If so, can I do this myself? What kind of fluid do I need to put back in?
My other question relates to the coolant. I had this flushed around 45,000 so I'm guessing it's also about time to get it done again. Can I do this myself as well? What are some tips as to what to put back in?
I've seen a lot of controversy on both subjects so I'll admit, I'm a bit confused.
If I've left out any important info, let me know and I'll supply it to the best of my ability.
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Old 12-12-2007, 12:43 PM   #2
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My take on both issues, is probably not needed but if you can afford the change then do it, what will it hurt to change it? I personally just bought some Royal Purple manual tranny oil stuff from Massive along with a bunch of other parts I am going to change as soon as I get some time. And probably do a radiator flush at the same time, why not I don't see that it can hurt anything if anything help protect it a little better...
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Old 12-12-2007, 12:48 PM   #3
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The Ford interval for the yellow coolant is 120,000. I'm not sure where they're getting the idea that your transmission oil needs to be changed, I've never seen any documentation out of Ford that there is any suggested interval for the MTX-75.

Typically, its one of those things you'd want to do if the transmission is out anyways. Otherwise, the gearbox is a sealed system and all the transmission fluid does is lubricate, it does not transmit power like it does in an automatic. They're just trying to get a little more out of you...
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Old 12-12-2007, 12:52 PM   #4
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They are probably working on job security... more problems, more money, if Jay Z only knew... HA HA
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Old 12-13-2007, 09:16 AM   #5
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I checked the Chilton Manual about the transmission fluid. They say not to do it unless there's a problem. So, problem solved. The coolant should be done; I consulted my father about it, he said that to do it right they should perform a "power flush" or something like that to get all the little chunks out.
I will do that when the time comes around.
Should the PCV valve (redundant?) be replaced? I've never replaced it.
Right now, my list of stuff includes:
Cleaning the battery terminals
Plug replacement, yeah, I know about the dielectric grease
Fuel filter
Air filter
Maybe pcv valve

Any suggestions on anything else that I should do?
Thanks for all your help. Everyone here has always been so helpful when I need insight.
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Old 12-13-2007, 04:44 PM   #6
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Okay, so I got around to doing the plugs, air filter, and the battery stuff but using my Chilton, I was unable to locate where the PCV valve was on the zetec. Can anyone lead me in the right direction?
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Old 12-13-2007, 05:07 PM   #7
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All you have to do is loosen the drain plug on the bottom and put in a couple of new quarts of tranny fluid. It's a fairly straight forward procedure. I changed my MTX's fluid in about 5 minutes.
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Old 12-13-2007, 07:32 PM   #8
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Yea the trany fluid is a real simple one. One trick i have is u stick ur pinky in there and if it gets fluid on it, ur good to go
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Old 12-16-2007, 07:55 AM   #9
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Where do you actually put the fluid in the tranny? I tried looking from the top and couldn't find a fill hole/bolt. From the bottom there are two bolts I noticed, one towards the front and another on the bottom in a litle cave. Am I guessng right that the one in front is to fill?
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Old 12-16-2007, 08:05 AM   #10
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That's exactly right. The one on the bottom is for draining. The other one on the front side is for filling it up. I used a smaller funnel with a long plastic tube to fill it up.
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