If the
oil leak is from the crankshaft ends then you are looking at a fairly significant cost time wise to fix for a single piece
oil seal installation. If it's from the sump edges maybe 3 hours to fix. If its from the inlet manifold edge or timing cover then maybe 5 hours to fix plus new gaskets.
Any fix might well fail and even worsen the leak - seriously consider whether the leak justifies the cost of repair. It would have to be really significant before I tried to fix it as V8s leak
oil - its the nature of the beast