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Old 01-03-2002, 07:52 PM   #7
Scooby Specialist
Member#: 4063
Join Date: Feb 2001
Chapter/Region: MWSOC
Location: Michigan

I called and talked to Dave Granquist at Redline, he is their tech guru over there. As soon as I mentioned that the factory required GL-5, he immediatly said 75W90NS from the trans. I asked about MT90 and MTL, he said they are both GL-4 and when the manufacturer calls for a GL-5 in the trans, use it... simple as that. He didn't seem to know a whole lot about the trans, since it also shares fluid with the front diff. The need for GL-5 may stem from that. He also said straight 75W90 for the rear diff, wheter it has an LSD or not. So, from Redline's recommendation and the fact of saving my 6/60 powertrain warranty... I will use 75W90NS.
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