While replacing my master cylinder this week, only had to go through 2 rebuilds until i bought a new one that didn't leak like the rebuild did. Noticed a loss of brake fluid, checked for leaks and all was dry at the master cylinder, brakes go nearly to the floor so i figured after pumping my way through 2 leaky masters, i must have air in the lines but not the case at all. A nice steady drip from the rear brake line, i guess it's called the crossover line, where the lines meet at a block, good and rusty, i can feel a hole in it, hidden away 18" or so from the left rear caliper and most likely a major, drop the exhaust and cradle type of job. Also read all about these wonderful cars with rusted out brake lines, seeing $2800 for a complete replacement and a very common "feature" on our cars, mostly from the rust belt. How nice! I do believe it outranks timing chains and all of the other great options that come with the proud ownership of these rotten pieces of trash. This one is junkyard bound.