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

I am having no issues with AMSOil's Synthetic GL4 Manual Trans fluid

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Originally Posted by Forest Gump

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

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Originally Posted by Forest Gump

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

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Originally Posted by Forest Gump

here is another link that may be useful

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

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Originally Posted by Forest Gump

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

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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.

good to know