This has been bothering me all day and finally in my drive home I’ve come to my rebuttale, yes you’re correct metal is not like a sponge or a sieve. BUT is does have nooks and crannie (pores) for the molecules to fill into and coat and that was my point. You don’t have to believe in it, but I’ve seen First hand of motors under major and reckless abuse succeed greatly under the use of magic oil AKA amsoil brand.