Donaldson nanofiber syn media is what is used in the Ea oil filter. It's a Donaldson patent, with a lot of testing done. IMO a company like Amsoil that is coming up on 40 years in business, I believe knows what they are doing. I don't see any other oil filter that has right on the box that states Guaranteed for 25,000 miles just as their oils. If it was not true it would not be on there. If your against such a product don't use it. But when us Dealers "try" to show a product better than one is using, we mostly get slammed for pushing something. Carry on !