Any advice to loosen a stuck PDK fill plug?

I can’t loosen it by hand with my 3/8 ratchet even after letting it sit for 15 minutes with PB blaster on the threads.

I could try my 1/2” extended breaker bar but that has me concerned…

 

Forget my post.

 

I didn’t see your post, but I did figure it out with some consultation. I simply stopped fretting and used my 25” breaker bar… it came loose easily.