I had some cans split when my trailer was parked in CA. I believe due to heat. Thats why we store them low in the trailer now. Havent had that problem again since. Even with CA summer temps in the high 90s low 100s. I agree shelf life can be longer than label states. I went out to do some dune riding once and pulled a can of soup out to eat. as I was finishing it the wife looked at me and asked if it tasted ok. i told her it tasted a little flat but was still good. She showed me the can that had "expired" 3 years earlier. Oh well im still here and didnt have any adverse reaction.