There might be room for an 8A (Ultra of course), that would practically ensure the bypass never opens.
1) not really going to "practically ensure" anything like that
2) the BP will open rarely anyway
3) what little it does open, hasn't been proven to be discernable in any manner in overall wear data
There are two reasonable reasons a BP would open:
- the dP immediately spikes due to a pressure flare from engine revving
- the dP slowly climbs due to media loading not allowing enough flow to satisfy the engine
The first condition can happen occasionally; proven by Jim Allen's data many years back. But it's usually under the condition of very cold oil, thick oil and a very high rpm at startup.
The second condition is a matter of greatly overrunning the FCI; not something any BITOG ever was going to experience anyway.
Sure; in theory there is some micro-small dP that would induce a smaller filter to go into BP whereas a larger filter might have enough media to overcome the dP and allow continued flow without BP. Existentially, it does exist, but it's such an incredibly small window that it's not worth the effort of worry in a practical real world application. And to really be of benefit, that same wickedly small dP would have to be present every time you start the engine, or operate at a steady-state. THAT, my dear sir, is what's "practically never" going to happen.