I personally do not feel it is best, but I had a bad experience with DOT 5 causing leaks due to incompatability. You would have to contact the parts manufacturer to confirm compatability. To my knowledge, EIS was the only company that certified its parts to be 100% compatible with DOT 5, but they are no longer in business.
DOT 5 is also known for being hard to bleed. Thsi is partly due to the nature of the fluid. It has a tendacy to get "mivro bubbles" in it, especially when first poured. It's best to let it sit to allow the bubbles to naturally settle out of the fluid. No harsh pumping of the pedal (I know lots of guys guilty of that), easy strokes, otherwise it will cavitiate. Of done properly, it will have the same pedal feel as glycol based fluid.
As far as fluid type, it is best to use only the fluid that will be run in the system, as the two types are not compatible to be mixed. If you were to do a change, the sytem should be flushed thoroughly with denatured alcohol, and preferrably all rubber replaced. This is partly to prevent contamination, but also there is a potential for swelling/softening of the rubber, which can lead to brake failure.
I won't say not to use DOT 5, there's several on here that have used it successfully. I'll only say to do the research, make sure the parts will work with it, and follow the bleeding directions to the letter for DOT 5.
