Bad news. Assuming the mechanic did the head gasket job correctly and the head is in good shape, it sounds like the engine block may be cracked. Is this a V-6 with two head gaskets or an inline 6 with one?
Air conditioning system is unrelated.
Bad news. Assuming the mechanic did the head gasket job correctly and the head is in good shape, it sounds like the engine block may be cracked. Is this a V-6 with two head gaskets or an inline 6 with one?
Air conditioning system is unrelated.