Originally Posted by danez_yoda
Second pic from the bottom. You see that metal center tube with a slight dint to it. It is inside the cardboard hole. Is that a leak path?
No that isn't a leak path.
I know I said I was going to do a post trying to explain this (again) and I will when I get a chance, but if the people claiming this would actually study the filter element and the way it seals the answer would be clear.
Start here around the 2:20 mark:
Remember the important points:
- The end caps are sealed to the Media
- The ADBV is sealed to the end cap
- The leaf spring is sealed to the end cap
All the center tube does is keep the element from collapsing, it is actually the same as an E-Core and no one seems to be running around claiming E-Cores are in bypass...
Look here:
https://www.bobistheoilguy.com/foru...en-ac-delco-pf63e-5109-miles#Post4830850
See how the media is glued to the end cap and the center tube only keeps it from collapsing, the FRAM works the same way. You can sometimes find both that you can slide the center tube back and forth in and all that holds it in is the overlap on the end cap.
If you set your preconceived notions aside and look at what's going on it is easy to understand that these things people believe let the filter bypass do not let it bypass. It is baffling to me that otherwise intelligent people will argue this to death (seemingly anyway)