WIX lists nominal filtration at 21 mu but also claims 95% at 20 mu? That doesn't make any sense to me.
The Mann filtration is a joke.
And this is why I'd explore an adapter. I have the Amsoil EAO15 on my Windsor. 99% at 20 mu. The EAO55 is the right size, has the right bypass psi, and has a...