If Amsoil doesn't have a new filter for my '93 Civic, I am considering either going with an adapted system from another car, or one of those universal induction filters. I like the fact that these filter remove 2 micron and smaller particles at an excellent efficiency. We don't have to wait for the debris to "cake up" as in standard paper filters for them to be efficient. I tend to over change my air filters, which I understand is not a good practice.