Right. It's a conundrum for sure. IMO, the only sire fire way to do it is to replace anything with rubber seals, flush the lines with DOT5 and refill the system with DOT5. IMO, DOT5 is really made for vehicles that either come with it from the factory, OR custom builds where it is originally installed. Pretty tough to get DOT3 out of everything such as distribution blocks, proportioning valves and residual valves. At least, that's my opinion.
