Greetings! I am new to this forum and need some help with a problem I uncovered today. I have a 4.0L six in mine and removed the chrome cover to the exhaust for cleaning. I noticed that both exhaust manifolds had cracks and are leaking. I removed both of them and found antifreeze in the exhaust ports. I checked the resevoir and found the fluid level to be about a quarter inch from the top. I also didn't notice any white smoke when running the car, prior to removal of the manifolds. Is it possible that the head gasket failed? Before I take on that project I want to be reasonable sure that is the source of the problem. Any help would be much appreciated!!