I've been using DOT 5 silicone since the mid-'70s. Confirmation came when the Army spec'd it in the 1978 (?) military Dodge pickups.
Never a stuck caliper piston. Never any paint damage. Never any boiling, even stops from 163 MPH using stock cop brakes.
Miscible (by law) with any other DOT fluid.
Stuff I have used recently is all Dow-Corning military surplus. I think virtually all sold in the USA, regardless of name on can, is D-C supplied.
Yes, a bit heavier viscosity - maybe. Would not recommend it with ABS systems.
BTW, Chrysler, in IMSA / GTU racing, used off-the-shelf Mopar DOT3.
Rick
