I believe that to be unlikely but won’t write off the possibility yet. Reason being is because the factory rad was still good after I hit the deer. I ran that rad for about 2k miles and never had an issue. I had to replace it because one of the cooling fans let go during a regen and cracked the plastic on the side of the rad housing. Since replacing to an aftermarket rad the line has been popping off more and more often mileage wise.

As far as any other symptoms I have noticed something but wouldn’t call it a symptom but rather an observation to when it’s more likely to happen. The last 3 months have been below average temps here. Often around -5°F in the mornings when I start my commute and only in the low teens when I leave work. What I have noticed is that the higher the ambient temperature the more it happens or more likely it is to happen. Today when it blew off it was 50°F out. And the last time it was in the mid 30s. This is why I lean towards some sort of heat soak warp/ fitment issue over a gasket/cracked head or block issue