Advice on Swap to Dot 5 - New MC

Sorry to put the second disagree mark up but this is too important.

The brake fluid compatibility standard, S5.1.10, of 49CFR571.116 exempts DOT 5 from the requirement not to stratify when mixed with others.
"(2) Fluids, except DOT 5 SBBF, shall show no stratification."

Go with Silicon based or Glycol based depending on your uses.
Bob if you put silicon based fluid in I'm sure you'ld know it. But you take some out of the MC and place it on some automotive paint. If the paint get damaged you know it was the regular stuff! And if it is - 10 years is way too long in most places - so change it anyway. Silcone based less an issue but might want to bleed it anyway just to be sure no no little bubbles of water settled in a low spot.