There are several videos on youtube that show various oil filters taken apart. None of them look like the Royal Purple one. I think Puralator has one that is made out of synthetics or mobil one, can't remember. As for the oil Royal Purple says 12k miles between oil changes. Mobil one has one that goes 15k miles. Less oil changes the better. If regular oil can go 7k+ miles, which alot of the oems are recommending on newer cars, I don't see why the synthetics can't go longer. Next time I do an oil change I may go with mobil one or catrol syntec and K&N filter simply because they are available anywhere and I don't have to order them.
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