MTX tranny fluid and hard shifting

[1993MTXSHO]

Ok guys iv searched about 20 threads and found a lot of good information, so my question is, what trans fluid should I use? I just changed my clutch, flywheel, pressure plate, TOB, TOB actuation ford and transaxle fluid with regular fluid. I was going to go with synchromesh but read some bad things about it but also read that some people love it. Then there is mobile 1 synthetic. I think I might have a bad bearing or something because when I have the clutch down at a stop I can hear what sounds like a bearing rattling; sort of like nuts and bolts in the tranny. So would putting in mobile one or synchromesh hurt my trans if I have a worn bearing? I have almost 100k miles on it and was kind of worried of putting in a synthetic because I hear synthetic oils in engines blow the old seals out sometimes. What should I do because my tranny is hard into 1st 2nd and 5th 3rd is a little hard and 4th doesn’t seem bad at all. So even after changing all of that and replacing the fluid im having this problem still of it being hard to get in especially at high rpms.

 

[F-22 Raptor SHO]

Use mobil 1 synthetic and give it awhile to work in. You should be fine as far as the tranny goes. Using the synthetic wont "hurt" the transmission

As to the hard shifting into gears, is your cable adjusted correctly? Pull up on the clutch pedal to automatically adjust it. Where is the engaugement point? Give the clutch time to break in to see if the nuts and bolts sound subsides.

 

[1993MTXSHO]

I had this problem with the old clutch. And all that new stuff did nothing for it. i think it might be a little better but that could all be in my head. Yes it is adjusted iv tried doing that a bunch of times. As for the synthetic that wont hurt the gaskets like it can do to an engine with higher milage?

 

[Minnesho]

I had the same prob with very hard shifting after a clutch change, i used synchromesh and the problem went away 100%

 

[spiegeltuxer]

Royal Purple MAX ATF. You will not be dissappointed. Its some really slippery stuff. My MTX was reall notchy and hard to get in 1st when cold, and 2nd - 3rd you had to make sure it was in gear otherwise it would grind when you let the clutch out. All of that went away with the MAX ATF. Some guys like the thick stuff, I like the thin stuff because I think it gets into all areas better.

See link below where they show how bearing surfaces improve from their original condition on RP. My 91 has has had Royal Purple oil for last 140k.
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http://www.royalpurple.com/techa/whyrpa.html
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91 BLK/Mocha - Power Buldge - SHOShop Catted Y - Borla Cat Back w/turndowns - Fitch Fuel Catalyst - Silencer box removed - 197K

 

[1993MTXSHO]

well with a thin fluid its not going to **** the gears as well. With high milage tranny everything has loosened up, and is not as tight as it used to be so a thinner fluid might be good for some milage but will probably hurt you in the long run. I might try the syncro mesh if thats not a thin fluid but i dont want to hurt the tranny as i have no money for a new one.

 

[spiegeltuxer]

From royalpurple.com:

Synerlec creates an ionic bond that adheres to metal parts (gears) for continuous protection, even after shut down. It is the conerstone of all their products.

I dont sell this stuff I just have used it and I have switched around at different times for different reasons but when I go back to it I can always tell a difference.

Look at the test summaries done by independent sources like drag magazines and universities. Always RP comes out on top, increased HP, TQ, and fuel mileage.

http://www.royalpurple.com/techrp/summary.html

91 BLK/Mocha - Power Buldge - SHOShop Catted Y - Borla Cat Back w/turndowns - Fitch Fuel Catalyst - Silencer box removed - 197K

 

[shojuan]

Thicker or thinner I suspect that all synthetic tranny fluids out there that meet the required specs or are designed to be compatible provide more than adequate lubrication for the gears. Thus it is my belief that the shiftibility qualities of a fluid can safely be the sole criteria by which somebody selects a fluid assuming that it's an appropriate fluid to use. Tranny wear is going to come from crunchy shifts much more so than from whether somebody uses $2.50 Ford Mercon or a top of the line $10 synthetic IMHO.

Perhaps a thicker fluid might make sense in a tranny with bearings known to be worn to the point where they really ought to be replaced, but 99% of us probably don't fit that group high mileage or not. I could have replaced all the bearings in my 89's tranny when I rebuilt it at 200,000 miles but they were still good so I chose to keep them (except for the mandatory diff bearing change when installing the quaife) and keep the tighter shimming that the factory assembly provides vs. the default one size fits all shimming that the service shims provide (although the factory tested all the possibilities and determined that the service shims are ok to use in all cases).

In any case I think the best thing you can do is try fluids based on what you think might improve the shifting and don't worry about whether that choice will hurt the tranny or not. If you find a fluid that gives you good shifting your tranny will be fine.

 

[shomesomesho]

I could have replaced all the bearings in my 89's tranny when I rebuilt it at 200,000 miles but they were still good so I chose to keep them (except for the mandatory diff bearing change when installing the quaife) and keep the tighter shimming that the factory assembly provides vs. the default one size fits all shimming that the service shims provide (although the factory tested all the possibilities and determined that the service shims are ok to use in all cases).

Never mind, I see what you mean.,

 

[Sh03d]

I think I might have a bad bearing or something because when I have the clutch down at a stop I can hear what sounds like a bearing rattling; sort of like nuts and bolts in the tranny.

I have the same thing, I assumed it was clutch chatter since you can feel mine in the clutch fork (or whatever you want to call it.)

 

[1993MTXSHO]

I have the same thing, I assumed it was clutch chatter since you can feel mine in the clutch fork (or whatever you want to call it.)

yeah but doesnt clutch chatter only happen when the clutch is engaging or does that happen when the clutch pedel is down too?