lumbersawer Used to use EOS GM cam break-in lube when it left went to just oil gonna pressure prime anyway,since this zinc stink has come along now need to deal with that. Read where you need to mix the zinc additive in your oil to be sure it's available during break-in. Or use a zinc base break-in oil. On hi-revers with a roller cam we use zinc 10w30 for 2000 rpm break-in run. Could use 15w40 with zinc in it like OTR truckers use.
