There are tests 'out there' on air filters that give info one can use in a purchase. And it's Amsoil that holds themselves a little higher, not us. Did I not say that I would buy the Amsoil air filter, even if it costs more, if there was something to base a decision on? Sometimes a practical test gives you more information than a marketing splash from a manufacturer's web site. I'm not an Amsoil slammer, I just believe that if they say their products are a technical step above others, then they should supply more info. Amsoil, goes it alone on some issues and that's fine. If you're going to be different, you might not have to be a little better, but a whole lot better (loose quote from Steve Jobs about Apple computers). Amsoil is the one that brought their products into the technical arena. The marketing went someplace else, and that would be toward the majority of the consumers that may not really understand much and just need a shove. I really don't need a shove, and graphs and pictures don't do it, if they are nothing but hype.
