NV3500 transmission oil.

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grouch

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I getting ready to buy another pickup. The transmission has a bunch of leaks and has been run dry so I may swap another one in. What lubricant does that thing use. All I can find is "use GM lubricant or equivalent". The guy who has it has 2 gallons on 85-90 oil to go with the truck along with a bunch of other parts. I'm sure it will work and maybe quiet the damaged gears. However, when I replace it or rebuild the one in it, I want to use the right weight lubricant.
 
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