Oil filter revisited

[Huskymaniac]

Many moons ago it was discovered that the Purolator L30165 (and equivalents) was an oversized but direct fit replacement for the Purolator L14459 (and equivalents). The L30165 is indeed a direct fit and it does indeed have a larger surface area and filtering capacity. However, today I stumbled upon a large difference. While both filters have bypass valves, the L14459 has a bypass pressure of 12-15psi while the L30165 has a bypass pressure of 25-35psi!!!!!

The obvious concern is that the larger L30165 filter will not go into bypass and could become a large resistance to flow at high RPMs. The concern would obviously be greater as the filter gets filled up with particles over time.

Anyone want to add some thoughts or insights to this?