Oil for a Slant Six that's been sitting a long time

if its really such a worry just buy some rislone from the parts store, pour some into a squirt bottle and just like 2 or 3 squirts. let it sit for a day or 2. turn it by hand if it is smooth, replace the oil and add rislone to crankcase and pull the plugs and spin it for a couple of seconds. then adj all ur rockers to .012int and .022 exh cold. then warm it up and re lash them to .010int and .020 exh (stock cam).