penetrating oil

One thing I will say about PB Blaster is that it does not seem to evaporate off the parts when you get it broken free. I had an extremely seized up axle adjuster for an 8 3/4. Although it took days to get it free (it was very rusty and I did not want to be hard on it), I had to change the bearing after being on the car for 800 miles (bearing made noise from day one when I installed it) and the PB blaster was still there in the threads. That being said, I like deep creep too.