The valve cover gasket, the intake gasket, and o rings for the spark plug tubes all need replacing, when we pulled out the spark plugs they had actually been sitting in pools of oil from the leaks, this aside from the plugs being old, so the diagnosis was old plugs, wires, boots, and seals, were all factors, in another week or two i'll be replacing the seals, it all comes together in a valve cover kit for around $150, the mechanic said it should be done within the next two months to avoid the problem recurring, I had a "rebuilt motor" put in last year, turns out they did a motor swap but never rebuilt it so everything I assumed was new was not.