Stop in for a cup of coffee

halifaxhops said
OK serious question new pistons, rings and main and rod bearings, re built oil pump (guts) run break in additive in the oil at first? Or is that just for cam changes? I am so confused!

Typically the break in oil or high zinc additives are just for new cams, but as mentioned, it can't/wont hurt anything but the cost of the bottle.