Bypass oil filter systems

[Hammerhead]

The amount of oil flow through a bypass filtration system is limited to what will be parasitically scavenged from the system based on; pressure, hose diameter, resistance, and flow capabilities. Most systems are typically rated at about 2 gal/min, so an 11 gallon sump should theoretically filter 100% of the volume every 5-1/2 mins (about 10 times/hr). The reality is that the bypass filtered oil is returned to the sump where it blends with the non-bypassed filtered oil.
That's why it's called a Bypass Filter System and the factory filter is called a Full Flow Filter because 100% of the oil flows through that filter.