I don't know how often you use WD-40 , PB Blaster, etc....to loosen tight nuts, bolts, or whatever, but I learned about something that works well.

Mix:

50 % ATF [ plain ol automatic transmission fluid ]

and 50 % Acetone

The mix HAS TO BE 50/50

Mix this solution in a CLEANED mustard bottle ,spray bottle or whatever the hell is laying around doomed for the trash. Shake it. Use it.

I was working on a ol horse drawn road grader the other day. Square nuts that were RUSTED to beat hell. I used some of this "new stuff" just to see if it worked.......

And it did work. It's alot cheeper than a 8 dollor can of WD aswell

anyway..........here we go.