Engine Oil Recommedation for 1967 273.

I have been buying the Valvoline VR1 oils lately for the older engines

states on the bottle not street legal, so it has to be good

Claims it is high in zinc

They do have a 10w30 and until the end of last month buy a case get a rebate for the cost up to $50

Auto Zone had it on sale a few months back for $2.50 a qt. for conventional VR1 but in 50 & 20w50 only

if you use any moderen oil I would suggest adding the zinc additive

Mopar Collectors guide has oil they are selling that they claim had the needed additives in it for the older engines, also Gibbs racing and others have specialty oils for he flat tappet engines