Originally Posted By: ZeeOSix
Technically, it shouldn't hurt to have two bypass valves (one in block + one in filter) ... knowing that the one with the lower opening setting will open first. Only thing to consider, is you wouldn't want to use a filter with a much less bypass setting than the valve in the block. I my experience, it's basically impossible to find out what the block bypass valves are set to (ie, I've never seen a service manual that calls out the setting spec).
Once again I find myself in agreement with you.
In fact, I currently have a FL400S on my Villager. That filter has a bypass, and the block has a bypass. I don't see it as a risk; doubt any harm will come of it. I put it on by accident; grabbed the wrong filter at the OCI. Going to run it for my 10-15k mile dino OCI. As long as I'm running an extended OCI, I might as well be a pure heretic and run the "wrong" filter at the same time!