FWIW (probably not relevant to this conversation), in the late 80's/early 90's the Air Force converted the brake fluid in our munitions trailers to "silicone" brake fluid (dot 5). The TCTO (time compliance technical order) required the systems be flushed with denatured alcohol prior to introducing the dot 5 to the system. Was it necessary? I don't know, but that was our instructions back then. I provided this input for folks that want to convert to dot 5 but are leary about mixing the fluids...
Once again, this is a
preference of the individual supplier...not based on logic.
And, once again, the anecdotal stories of failures right after a fluid change are probably from systems that were marginal before the change.
