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Old May 29th, 2020, 10:16 PM
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jmfurgason jmfurgason is offline
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Join Date: Dec 2019
Location: Las Cruces NM
Truck: 1963 GMC 1000 sm420 305E lwb wideside
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Default SM420 and 44Axel

What gear oil for both? I have 80w90 Valvoline not syn ,am i in the ball park??
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