Re: Oil weights

Posted by BigKev On 2023/8/25 11:07:44

Coolant, Just the standard green stuff.

Packard originally called for 30wt oil. My motor in the '54 has some blow-by, so I run 15W40 diesel oil (Shell Rotella), which also is supposed to have higher zinc content vs regular motor oil. Not that that is a huge concern on our low valve spring pressure motors. Otherwise, a 10W30 or 10W40 would be fine.