well, Baldwin is a Clarcor company, and Clarcor owns Baldwin, Hastings, Clark, and Purolator.
and isnt Hastings the company that makes the filters for Amsoil?
all that being said, looking at the pics of some Baldwin filters ripped open the filter media does not look the same as the EaO filters. also that bypass system of the Amsoil filter looks identical to the Donaldson filters.
i know #@$%! well that Donaldson is for sure using the nanofiber in their Endurance line of filters (as per their product literature), so they could be the ones making the EaO filters for Amsoil.
i know that Hastings at one point was making their filters, but that could have been the old ones.
the Wix filters also look very nice internally.