I was told that my 97 GP GTP would need intake gaskets replaced soon-ish. I know this is a common problem with this engine. I do not believe that i have coolant leaking into my oil, but i did notice that my coolant overflow reservoir is very dirty, and the hose that drops to the bottom has what i think is oil on it. I am wondering if i should use Bars Leaks 1111 head gasket fix to fix any minor leaks that may be present. Will this do the job?