I have used both, and have both on my shop work table but I do prefer the Kroil and have for years. Pehaps the difference is that Kroil is nothing but PENETRATING oil while PB blaster has something about "lubricating" on listed on the can I have. Pehaps this is why I give Kroil the edge over PB? Someone here on the bolt did a test not long ago on some bolts and also said Kroil was a tat better. Oh well, if it works use it. I might add that Kroil is expensive!!
