Originally posted by DemonSVT:



Mobil 1/K&N (same filter, different case)





According to Champion, the innards are also different.

Case: The case burst strength is actually higher on the Mobil 1, but they are both stronger than they need to be.

Filter: The Mobil 1 scores higher for filtering efficiency, but the K&N scores higher for flow rate. It might be the same material, but the M1 has more pleats--perhaps too many? Anyway, efficiency still good for both filters, with the K&N at about 90%, and the M1 at 93-95% (going from memory, here.) Kind of splitting hairs to a certain degree.

I tried the Mobil 1 once and then switched to the K&N considering that I race every now and then and otherwise visit the high rpm range often enough that I want to make sure oil is getting filtered most of the time. I'll take the slight tradeoff in efficiency (and Demon's advice).

Function before fashion. '96 Contour SE "Toss the Contour into a corner, and it's as easy to catch as a softball thrown by a preschooler." -Edmunds, 1998