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Discussion Starter · #1 ·
I put in Redline gear oil in my manual trans(axle). While it shifts smoother I really like the idea of improved synchro protection/reduced wear. I used two qts of "MT-90" and 1 qt of "MTL" (mixing these two is very common - check other forums).


I'd still like to know what Ford puts in there because it shifted very well, not as well as with Redline but better then my last G5M which was a pretty decent shifting trans (and super reliable - zero problems) and it's last fill was with a premium GL-4 synthetic (MTL-P).


I had the same transaxle (Mazda G5M) in my '99 Escort ZX2, which I bought new. That came from the factory with $1/qt Mercon ATF which is very thin, not the best lube for longevity or good shifts IMO. I drained that and refilled with Redline D4 ATF and ran that for 50K - nice - shift quality simply didn't degrade. I then drained that and refilled with Specialty Formulations MTL-P, which provided the best shifting quality of the oils I used in that unit.
 

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cos, I changed my fluid out about a month ago. I was debating between the Redline and the Amsoil. I went with the Amsoil MTG. Even though the stock fill shifted decently, there was a NOTICEABLE difference with the Amsoil MTG after fill. Keep us posted on the RL. I plan on running this MTG for about 10K then do another fill just to get the remaining original fluid out of there.
 

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Discussion Starter · #3 ·
Ya, I remember your post. The big difference, for me, is that the shifting quality/protection lasts for yrs with a premium syn oil as I can attest to with the 50K I put on the Redline D4 ATF.
 

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How many miles did you do the change at?

This is my 3rd G*M tranny, G5m and G25m-R. A very reliable tranny in a lighter weight car, but 6 owners don't seem to see its reliability as much as the compacts did. Going MT90 myself at 10k, wise move brother, I never regretted it myself :)
 

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Discussion Starter · #5 ·
I had about 13,800 miles on it. It'll probably shift like butta' for the next 100,000 miles.

I also bled the clutch while I was under there - warning:don't gravity bleed it!
 

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Can you please elaborate on your procedure? I might give it a shot....and how do you bleed the clutch if not by gravity? I have 30k on my car now so it probably wouldn't hurt to change the tranny lube.

[quote author=cos link=topic=84108.msg1580846#msg1580846 date=1185286942]
I had about 13,800 miles on it. It'll probably shift like butta' for the next 100,000 miles.

I also bled the clutch while I was under there - warning:don't gravity bleed it!
[/quote]
 

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[quote author=cos link=topic=84108.msg1580260#msg1580260 date=1185252130]
Ya, I remember your post. The big difference, for me, is that the shifting quality/protection lasts for yrs with a premium syn oil as I can attest to with the 50K I put on the Redline D4 ATF.
[/quote]

Yes, I consider Amsoil MTG as premium syn oil too.
 

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Discussion Starter · #8 ·
Metallicat,

The clutch line has three vertical loops in it (for rigidity?) and I thought/hoped that gravity would overcome them. Well it didn't! My $35 MityVac saved the day - it sucked the air out of the lines. Had I used my MityVac in the first place it would have only been a 10 minute job instead of 1.5 hrs. Live and learn. I used (and prefer) DOT4 brake fluid.

NOTE: Suck out as much old brake fluid from the master cylinder as you can then refill with fresh fluid before you bleed the clutch or brakes - it saves time and there's no reson to run old nasty fluid through the system.
 

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i had my milan for like 4 monthes and 4500 miles and the 3rd gear synro took a dive i got a new trans and that one did the same thing than i put royle purple 75w90 and syncromesh and it shifted like butter expce 3rd but other than that the tranny is prito strong i beat the heck out of it i deff recmond the royle p its the olny thing i will put in my cars
 

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Do auto trannies need their fluid changed (so soon.... 10,000 miles)? A tech at the tranny shop told me a while back that an auto could potentially go w/o ever being changed. He said if there were no problems/failures the fluid would still look good after 100,000 miles. So........... is he right? Auto owners should just relax? What'chall think?
 

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[quote author=rikkross link=topic=84108.msg1755502#msg1755502 date=1191403653]
Do auto trannies need their fluid changed (so soon.... 10,000 miles)? A tech at the tranny shop told me a while back that an auto could potentially go w/o ever being changed. He said if there were no problems/failures the fluid would still look good after 100,000 miles. So........... is he right? Auto owners should just relax? What'chall think?
[/quote]

IMO, you can take it a step further and make this preventative maintenance. At 10k, your surely fine, but if you have the extra cash, and want to save extra cash in the long run, think about moving to one of the top end lubes. It might not pay off as much to use the really good engine oils, but tranny is a different story.
 

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yea i poped my trans again and my friend who has a talon tsi told my to try red line shock proof light weight and as you all know out trans takes 90w oil so i consulted the trans tech at the dealer i work at and he said to mix it with a quort or too of atf and limited slip fricition modefier and i did it and it shifts like butter best shifting manual trans in a while
 

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Discussion Starter · #20 ·
UnderEstimated,

You'll have to decide that. An auto trans "drain 'n fill" (provided there is a drain plug) is becoming very popular these days - easy, fast and cheap. On my Escape's auto trans I do a "drain 'n fill" every 10K (with Mercon). I'd probably do it every 20K if it had Mercon V.
 
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