Classic/Antique Car Repair: Brake leak, mustang mach1, thread sealant

Question
Hi
I have a 1970 mustang mach1 with disc brakes. I am having a problem with a very bad leak at the banjo fitting on both sides. I have tried new crush washers,tread sealant but the problem is still there . Can you help please
Joe

Answer
Thread sealant will never work at the pressure level you are dealing with here.  It is odd that this happens on both sides of the car.  If it were only on one side, I'd say you have a crack in the casting, or else a defective hose, but since it is happening on both sides of the car, I think you have the wrong fittings on the ends of the hoses.   If these are new hoses, I suspect they gave you the wrong hoses at the parts store.

Other than that, I have no ideas at all. If all the parts are correct, these fittings DO NOT LEAK - I've never had a problem with leakage at that point.

I hope this leads you toward the solution,

Dick