I think cup grease is just wheel bearing grease (not the old stringy stuff though.) I have a modern vehicle with full floating rear axles that are lubed by gear oil, but the manual when replacing them says to pack them with grease for initial lubrication until gear oil gets out to the wheels.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.