This product has to be some kind of miracle if it can do what the makers claim.
Usually to coat parts that operate in a high temp/pressure and possibly a corrosive environment the treatment process has to be done in an ultra clean room under very exacting conditions like a clean room to assemble computer hard drives. The parts can't be touched by bare hands or exposed to humidity and must be clean, clean, clean. The slightest misstep and nothing sticks. At least that's how it's done with one process that I'm familiar with. I'd be willing to bet that a running engine would not meet these conditions and their claims extend to an older engine that's not performing well and burning oil.
So, it's possible that the advertising might be overstating this product's capabilities just a bit.
A more conservative approach would be a better bet. That is, use a good engine oil of the correct spec's and viscosity and let the oil do the job intended by the formulator and only limited by the bean counter.