Originally Posted By: ZeeOSix
My logic is cleaner oil is better. UOA particle count data shows that higher efficiency oil filters result in cleaner oil (ie, a better ISO 4406 cleanness code). It's been mentioned that there's a correlation between cleaner oil and lower wear particle counts in UOA. Should be pretty easy to see that a 99% @ 20 micron oil filter will keep the oil much cleaner than a 50% @ 20 micron filter, and that's been evident in the discussions in this thread.
I agree. This is basically where my mentality is on this as well, despite not having the kind of data points on demand more guru types have like yourselves. When I observed the ongoing thread of the repaired HG on the '93 Civic having a bypass system and performing such extended OCIs with ease I was convinced: Cleaner oil = major advantage.
Unfortunately, you won't get a FF oil filter to perform as well since its not designed to filter down the oil as well, but these well made 99% or so efficiency 20-25micron; or so, extended filters like Royal Purple, Amsoil, Fram Ultra, Mobil1 EP (not sure of the newer model M1s?) are about as good as it gets.
Ultra for the value is obviously why it's a favorite on BITOG these days with the fall of the Purolator P1 being a previous champion.
My logic is cleaner oil is better. UOA particle count data shows that higher efficiency oil filters result in cleaner oil (ie, a better ISO 4406 cleanness code). It's been mentioned that there's a correlation between cleaner oil and lower wear particle counts in UOA. Should be pretty easy to see that a 99% @ 20 micron oil filter will keep the oil much cleaner than a 50% @ 20 micron filter, and that's been evident in the discussions in this thread.
I agree. This is basically where my mentality is on this as well, despite not having the kind of data points on demand more guru types have like yourselves. When I observed the ongoing thread of the repaired HG on the '93 Civic having a bypass system and performing such extended OCIs with ease I was convinced: Cleaner oil = major advantage.
Unfortunately, you won't get a FF oil filter to perform as well since its not designed to filter down the oil as well, but these well made 99% or so efficiency 20-25micron; or so, extended filters like Royal Purple, Amsoil, Fram Ultra, Mobil1 EP (not sure of the newer model M1s?) are about as good as it gets.
Ultra for the value is obviously why it's a favorite on BITOG these days with the fall of the Purolator P1 being a previous champion.