Ok, there seems to be a sentiment here that Amsoil's oil filter is really the best there is. Being curious about it, I've been hunting for more information, but there really doesn't seem to be much out there. There is Amsoil's own page on it:
http://www.amsoil.com/products/sdf.html
But the two graphs they show actually raise more questions than answers. On the filter capacity chart, Wix and Napa Gold are 9 and 7 repectively, aren't they the exact same filter? So, if two identical, or nearly identical filters can vary by 2 grams, it would seem as if the three grams between the Amsoil and Mobil 1 filters is pretty irrelevant? This would be only relevant in extremely extended drains, right? So you could, for example, run two PureOne Filters for 6,000 miles, or one Amsoil for 12,000 for the same price and performance? Or one PureOne to 10,000?
Also, a difference of 1% in the HS806 test seems a little weak for the price difference? What micron level is this test at? Are there any flow comparisions that test it? Has AMSOIL added a Silicone ADBV?
I want to be clear that I'm not knocking the filter, it probably works great in combination with long drains. I mainly suspect that the PureOne works as well for less than half the price as long as the filter is only used for 10,000 miles or so. For the same price, or a little less, the Baldwin and Mobil 1 seem equal. I really just want the Amsoil gurus to cough up more information!
Original Post