All of the Ford and Mopar oil filters I have heard of all where bypass types, the Wix standard filter bypasses 20% and the race filter are suppose to bypass 40% work
I have used the Oberg screen filters also, they have a built in bypass also but you can set them up so they will make a light come on when they start to bypass work up
As far as metal bypassing the oil filter versus how small the particles the filter will pass through it the filter media determines that , doesn't it work
All the GM filters are 100% filtered but the motor will loose HP when using them also work shruggy


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)