OEM Oil Filtration Efficiency 50%@27μ / 99%@50μ

[SUNRG]

FWIW - i've seen some threads here regarding "who makes the best 616/617 oil filter", and i have some contacts with OEM supplier MANN, so i inquired about the PF 1055/1x oil filter:

PF 1055/1 x

50% --> 27 µ
99% --> 50 µ

Mit freundlichen Grüssen / Best regards

i expect 616/617 filters, regardless of the manufacturer are probably built to filter at similar efficiencies.

IMHO - considering these efficiencies, it's even more amazing that so many 617 engines are running strong for 500,000 to 1,000,000 miles without rebuilds.

cheers!