I forgot we also pulled a couple caps off mine and they were still within spec, but this engine also was certainly not low miles. If the oil was changed regularly on this one and not loaded up with fuel and moisture then it should be fine.You can’t reverse damage by using a magic oil. I put fresh Mobil 1 0w-40 into classics and my modern cars too. It’s as close to a one size fits all as there is.
If you are really concerned about bearing condition or damage then drop the pan and look at a main and rod bearing. That would take you a gals day at most.
Z
Cooling system is probably more likely to need attention. Mine leaked from just about every freeze plug in the block and head, so we had to replace them also.
Not the same engine I know, but it was sitting for a long time.