[Landsvw]

Did some research on the 5.4 exhaust manifold studs issue. Looks like, the original studs are too small and soft. So the expansion and contraction of the manifolds breaks them off. And then an exhaust leak develops. Thus, stainless, or, at least harder, studs. Some people recommend loosening and re tightening them every so often too, once replaced. It basically resets them. So, that explains why I had at least 1 shear immediately with almost no pressure. Was already cracked. And, these ones even look good, with little rust. Not sure if stainless will help, but these stainless ones have no shoulder going into the heads so may have a bit more flex? Or ability to resist the stretch? I dunno. In 30k miles I'll know something. Lol. That's the mileage that they start to break then leak.