2001 GTP Coupe

I have a very bad oil leak somewhere. Losing about a quart per 25 miles. Can't tell from drips on the ground where it is coming from. Power steering pump is also leaking so that makes it harder to tell.

Mechanic just told me the oil leak is from the intake manifold gasket. I don't remember there being oil passages there? Coolant, yes, and I think my LIM gaskets are on the way out because there are also small pools of coolant around injectors.

I would have suspected valve cover gaskets, but I don't see any obvious leaks there, and it doesn't smoke when driving so probably not dripping onto exhaust manifold.

Can intake manifold gasket leak oil? I did my LIM gaskets about 7 years ago, and I don't remember any oil passages there, just coolant. Is my mechanic right?