[Formerly Steve Wilkinson]

That minimopar site is fascinating. Summarizing it in way too few words, it basically says that the Mobil 1 filters _are_ substantially better, that they're manufactured by a company called Champion (not the sparkplug people), and that Mahles are very similar, perhaps even identical, in deisgn and construction to Champion filters, drainback valve and all.

Oh, and that the world's worst oil filters are anything made by Fram.