If you read that thread on the guys site I posted really well, I am having a hard time understanding why not use it. Its DOT (as in Dept of Transporation) approved and according to the article is safe on all internal brake components (rubber, neoprene, etc).
My big thing is the paint spoilage. I have spent almost a year perfecting the frame paint using 4 different coatings and several different coats. This is the second time I have done a frame up resto on this truck. The first time was brake fluid damage due to leaky, aftermarket brand new wheel cylinders.