The car im bringing home tonight has been sitting at least 10 years. I popped the cover off the master and the rear resevoir was empty but the front was still at a decent level.

The brake pedal is totally stiff. The last car I had with a similar condition,I blew the master cylinder up when I pushed the pedal to the floor,with a good deal of force needing to do so. By "blowing up",I mean I pushed and pushed and suddenly there was a loud pop and then the pedal went to the floor and wouldnt pump back up.

Is there any hope in saving this master cylinder? Or should I just bite the bullet and buy a new one?