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Looking at the Napa Site, I did not see any mention of Mineral Oil. I see this one available online in 5Gal in Quarts. "NAPA Premium Preformance 80W85W90W Gear Oil - 1 qt", NOL 75210

Is this the right stuff? if not, do you have the part number?


https://www.napaonline.com/en/p/FHQ...iversal+Marine&keywordInput=gear+oil


1953 Chevrolet 3100
261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done
In the DITY Gallery
Video of the 261 running

1964 GMC 1000
305 Big Block V6, sm420, the next cab off restoration