Looking at a cut-open filter doesn't do much for me.
These Purolator Boss filters are "good" no doubt, but not as "good" as the PureOne filters (for me).
So if the specs below are true (I don't believe the 99.9% eff. claim), the PureOne does a better job
of filtering (20 micron) but does not hold as many grams of dirt as the Boss. So, I'll change my oil a little more
often thanks, and use the PureOne.
PUROLATOR: (from OilFilterData.com)
BOSS
Model: PSL14459 (Syn., 15K mi.)
Brand: Purolator Synthetic
Thread: M20x1.5
ADB Valve:Yes Bypass Valve:12-15
Efficiency: 99% @ 25µ
Burst PSI:
Height:2.95" Diameter:3.15"
Displacement: 22.99 in³
PUREONE
Model: PL14459 PureOne
Brand: Purolator
Thread: M20x1.5
ADB Valve: Yes
Bypass Valve: 12-15
Efficiency: 99.9% @ 20µ
Burst PSI:
Height:2.95" Diameter:3.15"
Displacement: 22.99 in³