Wow, this thread has exploded. If I were a troll, I would be very pleased.
The highest sump temps I have seen so far are about 230-240F. I'm sure the filter temp was higher, considering the location.
It's funny that many have commented about me being the reason for the glue separating from the end-cap, which, yes ultimately was caused by me lifting the end cap off of the filter media, but I would draw your attention to the pics again.
Notice how there is almost zero glue left on the top end-cap? Clearly the glue didn't adhere, or lost its adherence to the metal, but remained on the filter. Sure, the leaf spring will help keep the end cap on, but the purpose of the glue, is ultimately to create a seal between the media and the end-cap.
It should also be noted that this filter, and almost all MC filters are thread end bypassers - meaning, the filter element moves quite a bit during a bypass event. Hopefully that leaf spring can maintain even pressure on an end cap that's 'hanging by a thread.'
Furthermore, I was even more concerned when the glue crumbled upon the end-cap removal. It was brittle, hard and cracked in several places, not to mention the chunks of glue that were loose.
I have never, ever been able to remove an end-cap so easily, even on the previous FL-820's I have opened. Normally I resort to cutting the media out of the end-caps, and remnants of the media remain glued to the end-caps in the process. Not this time.
Look again:
The dome end-cap separated and left almost no glue, while the thread end remained intact.
Say what you will about these filters being on millions of vehicles without issue, yada yada, but the fact of the matter is, it did not work for ME and MY APPLICATION as intended. Perhaps my track time and slightly elevated oil temps caused it fail in this manner, I'm not really sure, but I am sure that I will never use the FL-820 again. An XG-2 is on there now and I will cut and post it when ready.
Keep in mind that Ford modular V8's regularly produce 100PSI of oil pressure when they're cold. Imagine this filter with that kind of pressure behind it! Perhaps I do have chunks of glue floating in my engine now, perhaps I don't. We'll never really know unless I tear down my engine and look, but to say that it probably didn't is not good enough for me. I demand the best parts for my vehicles, which is why I stuck to OEM filters for so long, but apparently I was wrong to place my faith in MC filters. I'm glad this site exists to expose the [censored] that's hidden in these filters.
Now just imagine if this were a FRAM filter behaving in this manner, I don't think anyone would make excuses for them lol!!
Ultimately, anyone can use whatever filter they want on their vehicle, it doesn't really matter to me, [censored], if you wanna install a filter block-off plate and run unfiltered oil, be my guest! To each their own, just be sure to make an informed decision!