crazyal
Super Member
Sorry, but I have to disagree. You wrote as if engine maker's were quality constrained by spin on filter companies. Not true at all.
Engine makers are "in the drivers seat" to build an over pressure relief and/or anti-drain back valve in their engine if they want to. It's totally up to them to spec a filter with or without those features. They can also spec whatever requirement they want and let the filter companies bid on it.
I had a vehicle with the pressure bypass built in, so the spec'd filters without it. The engine had a known history of the bypass not being reliable.
At least with a filter you can screw on a new one if there's a problem.
Filters are an off the shelf product. Most are used in a wide range of engines (and brands). For decades designers just pick the size that fits in the allocated space.