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MT-90 in the differential

Old 12-02-2007, 06:52 PM
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MT-90 in the differential

I had some Redline MT-90 lying around and need to change the differential fluid. I'm probably going to use RP 75w-90 but just curious what would be the side effects of using the Redline.
Old 12-02-2007, 08:00 PM
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Originally Posted by aznboyga
I had some Redline MT-90 lying around and need to change the differential fluid. I'm probably going to use RP 75w-90 but just curious what would be the side effects of using the Redline.
AFAIK, the MT-90 is only for Manual Transmissions, and it doesn't have the LSD additives that your differential needs. Redline makes a GF-5 gear oil ("75w90 Gear Oil"), specifically for limited slip differentials. Shouldn't be any issues with that or RP Max Gear 75w90.
Old 12-03-2007, 12:24 PM
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the moment you put MT-90 into your Rear Diff, its the moment your Diff getting its slow and painful death.
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