P.B. Blaster Kicks A$$ !
Way better than WD40 !
There is another company that makes a penetration oil that I think is better than P.B. Blaster, The company name is Kimball Industries. Stuff smell like cherries but really works great for frozen bolts, nuts, and hardware.

https://www2.kimballmidwest.com/All-Products/Chemicals/Lubricating-Compounds/Penetrants/

RUn2It... I'll hafta try that combo and see if it works. Thanx for the input on that homemade formula.

Joe