[Argess]

I've done some Googling on the DOT3/4 vs DOT 5 and changing flushing thing. Here's what I found:

DOT 5:

Somewhat more compressible than DOT3 or 4, so the pedal may feel a bit "spongy".

Won't absorb water, which has its pros and cons. The con being any water that does get in, is concentrated in one spot and can rust things from the inside. The pro being it won't "suck" water in from around the caliper seals.

Won't hurt paint.

Is compatable with all rubbber or plastic seals.

It is almost impossible to flush a system out without dismantling and cleaning all components that contain seals. De-natured alcohol can be used to flush lines, but the possibility of water being aborbed is there during the time the lines are not connected to the other brake components.

When mixed with DOT 3 or 4, it creates a "gell" or jelly like substance that can create brake malfunctions, especially in the master cylinder.

Dot 3 or 4 may deteriorate seals depending on the seal's original desing intent.

So, based on all this, I think I'll leave the DOT 5 in there for now. And to be truthful, dismantling the rear inboard brakes for cleaning doesn't appeal to me in the least. When those rear calipers need replacing, maybe I'll change to DOT 4 then.