I run DOT5 with great performance in everything I have that's non-ABS

When I did the 70 R/T and 74 Ramcharger, EVERYTHING was new except for the hard lines, so flushing was easy.

WHen I did the 75 Duster, I tried to use the DOT5 with my power bleeder to do a full displacement and about 18 months later, I had to replace the rear wheel cylinders due to corrosion and when opening them up, realized that the DOT5 didn't push out the old fluid, so I went ahead and rebuilt the front calipers and all is well and brake performance is great.

The think I like most about DOT5 is that even 10 years after running it in my 70 R/T, there is NO corrosion in the brake system and I'm contributing that to the fact that it's not water soluble. I do take it a step further and pack behind the piston seals with silicone grease and will continue to do so until I realize that my efforts are pointless, or someone has some technical info showing this is bad, but it keeps moisture out which is my goal.