Best penetrating oil I have ever used

[bthere]

My dad uses PB Blaster on his farm. Some of the old equipment that he has gotten over the past few years has about 50 years worth of rust. WD40 etc. won't even touch it, but PB Blaster does the job more often than not.

[Hellrazor]

Oh, that kind of penetrating oil . . . .

Depending on how drunk you are the same recommendations apply

[Pappy]

PB Blaster used to be hard to find. Now you can find it in most any parts store, HD and Lowe's.