Orval Fairbairn wrote:

DOT 3 fluid is chemically geared to steel components -- not aluminum. It
is also incompatible with Buna-N O-rings.


Of course, O-rings are cheap. Just replace 'em.

How about silicone DOT-5? That does not attract water and is not
flammable.

As a side note, I have not heard of brake fires in light aircraft,
almost all of which use Mil-5606.


Read a few posts up. I posted several links, including one incident that I know of personally. Ed helped me rebuild my
engine, so I know he actually exists.