Purolators tear, as we know. We also know that Mann oil filters are made by Purolator and Bosch as well. ... hmmm
http://www.bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=3024038
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'07 BMW 530xi N52 engine, E60 chassis, 255 hp
'11 Chevy Camaro LS, 3.6L V6, Zeta chassis, 312 hp
'40 Chevrolet Special Deluxe 2-Door Town Sedan