Some info on mitsubishi Diamond Gear Lube 75w85 GL-4

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08-15-2012, 03:09 PM
Toni

Some info on mitsubishi Diamond Gear Lube 75w85 GL-4

So I spent some time looking around for this gear oil for the tranny. Turns out there are two part numbers for the 3000gt. The older number A991ZC2X01 is the 5 gallon pail and the number it supersedes to is MZ320197 which comes in quarts but most places will force you to get a case of 12. This is also the fluid Jackstransmissions sells per quart which is a user friendly qty to order.

EDIT: The Diaqueen(MZ313376/3717610 ) is not recommended for our trannys.

https://dl.dropbox.com/u/29716828/3s...b9198ff79.jpeg
08-16-2012, 02:56 PM
Chris@Rvengeperformance

jackstransmissions recommends the diaqueen. I tried it and noticed no improvement over redline mtl.
08-16-2012, 03:45 PM
Toni

Well, there are a couple on that sheet, curious which one and why that over the one that is supposed to go in our trannys according to mitsu.
08-16-2012, 04:04 PM
Chris@Rvengeperformance

here is what he says about it: Jacks Transmissions LLC — Oil
08-16-2012, 04:27 PM
Toni

There doesn't seem to be a mention on 3000GT tranny oil only EVO?
08-16-2012, 04:30 PM
Chris@Rvengeperformance

Quote:

Originally Posted by Toni

There doesn't seem to be a mention on 3000GT tranny oil only EVO?

DSM, 3S and EVO are the first words on the page.
08-16-2012, 04:40 PM
Toni

Yes...but no recommendation of oil for a 3s other than capacity. Only DSM, tcases, and evo tcases.

Quote:

DSM, 3S and EVO transmissions require 2.5-3 quarts of oil.

Quote:

For our DSM transmission rebuilds we recommend factory Mitsubishi 6-speed manual transmission gear oil from the 2005 Mitsubishi EVO MR

Quote:

EVO T-cases The recommended fluid for stock to mid horsepower level street cars is the OEM DIAQUEEN Mitsubishi part# 3775610
08-16-2012, 04:43 PM
Chris@Rvengeperformance

Quote:

Originally Posted by Toni

Yes...but no recommendation of oil for a 3s other than capacity. Only DSM, tcases, and evo tcases.

I've seen him mention it plenty of times on 3si, I'm not sure why you are making this so complicated. I used the fluid, didn't like it any better than redline, and switched back the next time I had to drain it out. I was just trying to help you by indicating that I don't think it is the miracle fluid some proclaim so you don't waste a bunch of money on it.
08-16-2012, 04:45 PM
Toni

Well I am making this complicated because the oil you used is different and not the one that mitsu has recommended for our cars. So my point to all this was...maybe that's why you didn't notice any difference?
08-16-2012, 04:46 PM
Chris@Rvengeperformance

Misubishi DiaQueen fluid for our trannys? - 3000GT/Stealth International Message Center
08-16-2012, 04:47 PM
Chris@Rvengeperformance

Quote:

Originally Posted by Toni

Well I am making this complicated because the oil you used is different and not the one that mitsu has recommended for our cars. So my point to all this was...maybe that's why you didn't notice any difference?

I used what he sold and he indicated that was what to use.

Jacks Transmissions LLC — Genuine OEM Mitsubishi Trans Fluid
08-16-2012, 04:50 PM
Chris@Rvengeperformance

here is another link that may be useful

Diaqueen - Part Number Change?? - 3000GT/Stealth International Message Center
08-16-2012, 04:50 PM
Toni

Quote:

Diaqueen is pretty awesome stuff, but you have to get the fluid for the tranny, NOT t-case. I don't know who would put the t-case stuff in a tranny...

Jack

Quote:

Yes. There is a PN for Tranny, and PN for t-case.

Guess it would be good to know exactly what the PN is for the tranny version. Do you know exactly what you used? MZ313376 that everyone seems to be mentioning is not it.
08-16-2012, 04:52 PM
Chris@Rvengeperformance

Quote:

Originally Posted by Toni

Guess it would be good to know exactly what the PN is for the tranny version. Do you know exactly what you used? MZ313376 that everyone seems to be mentioning is not it.

I bought it straight from jacks for 10.50 a quart. It comes in a generic container, so no part #. That last link has the part number that dbest used that seems to be correct. I am sure it is the same as what jack is selling. He sells it with the getrags he rebuilds for us.
08-16-2012, 04:53 PM
Chris@Rvengeperformance

I don't think anyone is using the first one on your piece of paper, the Diamond Gear Lube.
08-16-2012, 04:55 PM
Toni

Quote:

Originally Posted by Forest Gump

I used what he sold and he indicated that was what to use.

Jacks Transmissions LLC — Genuine OEM Mitsubishi Trans Fluid

Guessing you just got generic cans and no PN? This seems to make since that he got the correct one because until recently apparently, it only came in 5 gallon pails and larger. I've never seen him reference the EVO PN but everyone else does. So there is a good chance he is offering the mitsu recommended 3000gt oil.
08-16-2012, 04:58 PM
Toni

Quote:

Originally Posted by Forest Gump

I don't think anyone is using the first one on your piece of paper, the Diamond Gear Lube.

Which I find interesting because two dealerships including cherry hill said that top one is the correct oil for the 3000GT. Well I have it ordered so we'll see what happens lol.
08-16-2012, 04:58 PM
Chris@Rvengeperformance

Quote:

Originally Posted by Toni

Guessing you just got generic cans and no PN? This seems to make since that he got the correct one because until recently apparently, it only came in 5 gallon pails and larger. I've never seen him reference the EVO PN but everyone else does. So there is a good chance he is offering the mitsu recommended 3000gt oil.

Yeah it was a big plastic one gallon jug with 3 quarts in it. His price is good enough that I think its better to order from him anyway. I'm not saying it shifter bad at all, it is just virtually indistinguishable from redline mtl. In a trans with good or new syncros I don't think the fluid is really that important as long as you do not go to think it will shift well with any of the good fluids. I think the only time it becomes really picky is if your syncros are getting worn.

honestly in reality NOTHING shifts better than syncromesh. Whether or not you are willing to run that is up to you, but I would only run it in a trans that was getting crappy or of unknown condition anyway. For a trans I just rebuilt I'd run the diaqueen or redline.
08-16-2012, 07:28 PM
J. Fast

The sheet you posted is from Gary Melcher's Master Elite service manual from Mile High Mitsubishi here in Denver, Colorado. Diamond gear lube is the appropriate fluid. When you mix different mfr's fluids from OEM you change the slip film on the moving parts of the transmission and have to burn off the old film. Think of the oil film on the synchro's and moving parts similar to brake pads and breaking in/bedding new pads. Until you get the fluid hot enough to burnoff the OEM film you will often find the synchonization and gear shift is notchy.

I use Diamond Gear Lube and feel it yields the smoothest engagement and the best operation feel.
08-16-2012, 08:26 PM
Intropy

I run 10w30 lol.
08-17-2012, 08:04 AM
2fnloud

I am having no issues with AMSOil's Synthetic GL4 Manual Trans fluid
08-21-2012, 09:04 PM
Toni

Quote:

Originally Posted by Forest Gump

jackstransmissions recommends the diaqueen. I tried it and noticed no improvement over redline mtl.

Quote:

Originally Posted by Forest Gump

Misubishi DiaQueen fluid for our trannys? - 3000GT/Stealth International Message Center

Quote:

Originally Posted by Forest Gump

here is another link that may be useful

Diaqueen - Part Number Change?? - 3000GT/Stealth International Message Center

Quote:

Originally Posted by Forest Gump

I don't think anyone is using the first one on your piece of paper, the Diamond Gear Lube.

Just to make sure this is cleared up...

The fluid Jackstransmissions sells is the Diamond Gear Lube GL-4, I confirmed with them. The Diaqueen(MZ313376/3717610 ) is not recommended for our trannys.

Doesn't change the fact that you didn't see any difference with the Diamond Lube though. I'm gonna give it a try and see how it goes.
08-21-2012, 11:11 PM
Chris@Rvengeperformance

good to know