Ive used 3-in-1 oil on generator and electric motor bearings with good experience. The 1936 "Instructions For The Care of Your Chevrolet Truck" says under "Generator Lubrication" - "Every 1,000 miles, lubricate the generator by putting a few drops of light oil or engine oil in the 2 oil cups."


~ Dan
1951 Chevy 3 window 3100
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"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)