Valvoline VR1 Racing SAE 20W-50 or 60W High Performance High Zinc Motor Oil 1 QT, Case of 6

Yes, 60w in older Harleys is pretty common
A couple of the shops really loved this stuff, too, long since discontinued. It was called grade 70, not SAE 70, because it was heavier than what SAE defined as SAE 60, but they didn't define specs for a 70 weight engine oil.

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