PB Blaster is the stuff to use! the only thing I have ever found that
I liked as much as PB was Valvoline Synthetic lube but I can't find
the stuff any more. You will want to use six point sockets rather than
a twelve point socket, you will have a lot smaller chance of stripping
the head off of the bolt. If you have any rusted bolts that give you a
lot of trouble or look rough I would replace the bolt.