Surprise results! Aircraft ULTRA paint remover: Does it work? bdp garage ep31

I found a new formulation of aircraft paint remover called Aircraft "ULTRA" and it's touted as being as good as the older formulations with methylene chloride which is now banned in the US.

I put this stuff to the test on my K5 blazer door and found that it didn't do as well on the door but did very well on the fender. It's a mystery to me why there's a big difference there. If anyone has any ideas why, please let me know and I'll see if I can run another test on the other door.

Here's a link to my original video testing hardware store brand paint removers:

Here's a link to the Aircraft remover part3 video where it works really well: