Great explanation - Thank you.
So the bypass valve kicks in when pressure inside the filter gets too high or the filter needs replacement - very cool.
Gonna be a whole new experience to have a modern style oil filter.
I'm sometimes thinking of removing the bypass on the 235, because I change oil rather frequently anyways.
But then again, any filter is better than no filter at all.
And I know some big rigs today use both types of filters for different size particles.
The 261 is still in pieces and I don't know yet if the canister and valve is still in good shape and reusable.
I rather stay with the original and mount it on the engine block or intake. Then I still have to find out what modern fram part# will fit.
