Originally Posted by Hotrod Lincoln
The straight 90 weight mineral oil (not hypoid) that's specified for Ford N-series tractors is exactly what stovebolt 3 and 4 speeed transmisisons need. Our local source in the southeast USA is Tractor Supply Company, but I'm not sure if that business operates in other parts of the country.
Jerry

Here is what Jerry is talking about and what I use in my ‘52 3100 three speed.


[LINK]
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Last edited by Phak1; 05/25/2022 11:26 PM.
Phil
Moderator, The Engine Shop, Interiors and Project Journals

1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes
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