Last edited by klhansen; 06/22/20258:21 PM. Reason: Fixed link
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
Punch - Below is a screen grab from the GM Heritage Center 1935 Chevrolet Truck data PDF. Originally calls for SAE 160W for Summer and SAE 90W for Winter lubrication (with further thinning for temps below zero). Although Otto's source indicates you will need to order 4 quarts (8 pints), the actual 4 speed capacity is 6-1/2 pints. Your order will leave you with some left over for future top offs if needed.
There's tons of info on the web about the various "equivalents". One modern equivalent mentioned in an AACA (Antique Automobile Club of America) forum said the old SAE 160W is now SAE 250, which supposedly correlates to the 600W gear oil (not an SE rating) that Otto mentions above.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)