First off, I seriously doubt you saw boiling oil...............................
So let me get this straight, a month ago your mechanic looked at the car and said you needed to replace the valve cover, lower intake, and oil pan gaskets, and now you're amazed that the car is leaking fluids and making noise!?!!?
Sounds to me like the lower intake gasket that you were supposed to replace finally gave way. is their white smoke coming out of the tail pipe? Drain the oil, is it a different color than what it normally is?
If a mechanic tells u something is wrong, my suggestion is to fix it ASAP. Before you possibly blow your engine like you may have done.....![]()