Pablo
Well, the OP of this thread (@Glenda W.) poured drops of oil over it, & there was oil flow into the filter with just gravity
The part that goes down into the center tube doesn't matter. It's the lip surface above that area that makes contact with the TOP of the end cap where the seal is made. If both interfacing surfaces are not flat and smooth, it could be a leaker as seen in these two on-going threads.
Yep. If mere gravity lets oil through, it’s unknown the extent the passing of unfiltered oil. Past ISO testing means little if the problem or flaw developed since then. No way to know. Why risk it with blind trust of a past test? I don’t need to defend a company here. I’m interested in a sound product. One wouldn’t run an oil filter with media tears. How is this different? In practice, most oil may pass through the media, but any that make its way to the dome end of the canister will undoubtedly pass through the path of least resistance.
Non-metal end caps will seal much better than metal-on-metal.
I did see that and looking at the formed metal I don't how oil pressure could seal it.
I'd call it a manufacturing flaw ... possible design flaw.
There's still a gap with pressrure on the leaf spring. A gap will leak light, air and oil under pressure.
I think he's saying oil pressure might help close it, much like a stopper in a bathtub?
Any bypass that leaks through is still going to get filtered. The filter is fully functioning still.
. So the controversy remains “alive and well”.
Maybe but I doubt it will seal metal on metal
It’s not possible to have a greater pressure differential on the side with filtered oil (vs unfiltered bypass behind valve) which is where the face of the valve is positioned .
True ... and as I pointed out in the Whip City video that showed the Endurance shortly after it first came out, the leaf spring design and stamping was really well done on that one. Not so much today with examples seen here.
Oil pressure (the dP) inside the filter isn't going to change the air gap at the leaf spring to end cap interface.
It won't ... the dP would only be a few PSI. It's been shown that putting lots of force on the leaf spring ears doesn't change the gap. Like said, the leaf spring is way too stiff in the area where it contacts the end cap for force on the leaf spring ears to effect. The ears will most likely permanently deform before the force on them closes the gap around the center tube. The interface between the end cap and leaf spring needs to be flat and smooth on both the leaf spring and end cap for a successful metal-on-metal seal.
You don't know the condition of the filters that were officially ISO tested way back when ... when the Endurance leaf spring looked well done as shown in the Whip City video. As far as the "independent testing" ... grain of salt and not official enough to know. Besides, BR didn't tear the filters open and look for leak gaps, so not verified one way of the other.Any bypass that leaks through is still going to get filtered. The filter is fully functioning still.
There was Independent testing done 8 months that indicates superior filtration.
However, people here aren’t convinced that those had this defect. We know that the defect existed earlier last year though. My “Logic” tells me the filters tested (Endurance and Amsoil) had them at the time
Same argument made about torn media popping up all over the place.
