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Need a real answer on transmision oil

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Old Dec 20, 2004, 05:46 PM
  #31  
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So basically, the Syncromesh is not GL-4 rated, which is what our car calls for and that is why I use and recommend MT-90.

That's what i'm thinking, but what about the MTL? It's about the same. MTL SAE 70W80 GL-4
Old Dec 20, 2004, 06:07 PM
  #32  
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BG synchroshift is great for the transmission. My tranny noise is gone after I started using it.
I second that .
I've tried several others and this stuff by far has the smoothest shifting and the least noise of all.
Old Dec 20, 2004, 06:07 PM
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wrong... I had some RedLine 75w-90 put in the tranny after a clutch job. Shifted like crap. Switched to RedLine MT-90 and it shifts like butter.

The MT-90 has friction modifiers for the syncros, while the other stuff does not.
But the Redline 75W90 is a API GL-5 and the MT-90 is API GL-4 so that might have been the problem since Mitsubishi recommends only GL-4 in the tranny.

Last edited by two2thehead; Dec 20, 2004 at 06:09 PM.
Old Dec 20, 2004, 06:26 PM
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Originally Posted by two2thehead
But the Redline 75W90 is a API GL-5 and the MT-90 is API GL-4 so that might have been the problem since Mitsubishi recommends only GL-4 in the tranny.
Ding ding ding!
Old Dec 21, 2004, 08:12 PM
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The more i read the more smarter i become. ppssshhh

Reading has been known to cause brain rot, but only in the state of California. Anyway it beats crotch crickets any day.
Old Dec 26, 2004, 08:20 PM
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wow... so FINAL --> Redline MT-90 or BG SYNCROSHIFT? Any downsides to either?
Old Dec 26, 2004, 08:36 PM
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I'm going with the Redline, i used it in my GVR4 and 90 Eclipse and didn't have any problems. Remember, you can only please 50% of the people 100% of the time.
Old Dec 26, 2004, 08:41 PM
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hahaha true... when does tranny/diff fluid need change for the evo?
Old Dec 27, 2004, 08:16 AM
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Well, I've had the MT-90 in the MR 6sp for about a week now, and I'm not really happy with it. While it did help things when the tranny is cold, it did not get me as smooth a shift as I had expected (based on my previous experience with MT-90 on the Celica). So, I'd recommend trying the synchromesh first.
Old Dec 27, 2004, 08:45 AM
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People can bench race the fluids with "specs" all they want, but you owe it to yourself to try the Syncromesh/Syncroshift... I don't have any of the "problems" with the tranny most are complaining about.
Old Dec 27, 2004, 09:34 AM
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Zeus...Bench race... wow.. "engineer speak " as us "test monkeys" used to call it.

There are two main condsiderations here. Corrosion or oxidation and friction. The first condition occurs where you have two dissimilar metals separated by a fluid which then sets up electrolosis. The friction issue has to do with viscosity characteristics linked to film strength and molecule length. The Syncromesh is a hybrid mixture or magic juice concocted to ease specific deficiencies in particular applications. The DSM cars are mentioned along with the Chysler spec. and part number. I have had experience with factory service reps recommending such under the table kinds of "band aids" before and they usually work well. Any service tech who ventures out on their own will come under heavy flack when the factory dude comes by to investigate an onging service problem. Bottom line.. Thanks for the heads up Zeus... you da Man
Old Dec 27, 2004, 01:05 PM
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wait before i go out to try MT-90 or BG synchroshift... are there any additives in either of those 2 that are bad for our tranny? I think earlier in this thread, someone said that Redline MT-90 is bad for our brass...
Old Dec 27, 2004, 01:17 PM
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You can use MT-90 or BG without any additives in the transmission. I have ran them both, and both performed very well. To be honest you cannot go wrong with either oil, no matter what any fanboi's say
Old Dec 27, 2004, 01:51 PM
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Just ordered some of the BG Synchroshift from Lancershop.com. Time to see how good this stuff really is.
Old Dec 27, 2004, 02:35 PM
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My Mitsu dealer, when I asked them about changing the tranny fluid said that they prefer to use BG Syncroshift over the OEM fluid. Take it for what it's worth.


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