OK, guys, here we go again. I just got my 69 Hemi bird's power brake master cylinder from White Post and they do not recommend DOT 5 brake fluid, a bummer.
The question now is this: to prevent leakage of some DOT 3 or 4 on my underhood paint, does anybody recommend any type of sealant on the brake line fittings before installation on the master cylinder? Also, will I have to flush all the lines of any DOT 5? I did not observe any leaks from the front or back lines at the wheels, but I don't remember the compatibility of different fluids.
Ask them WHY they don't recommend it.
If they're concerned about a "spongy" feel of the pedal only,
that's something you can accept.
