You will be adding brake fluid to the reservoir often.The brake pedal won't feel firm.
The brake pedal may sink to the floor as you are applying steady pressure.
Do a visual inspection of the brake lines looking for that wet spot.
You have a leak(s). Check main brake lines and brake cylinders at each wheel.
AnswerCheck fuel filter and fuel lines and fittingssome of the neons were recalled for bad fuel and brake lines
check your brake fluid level. its probably empty for some reason...leak? If the fluid level is correct than you most likely have air in the brake lines and will need to have the brake lines bled.
You have a leak. It could be from the master cylinder, lines, calipers, hoses, or wheel cylinders. Add fluid, pump the pedal, and look for the leak.
You could be plugged, maybe there is air in the lines, could have a leak somewheres in the lines or other 3 breaks.
Usually when a brake pedal feels more stiff than usual, there is a vacuum leak. The brake lines probably should be bled.
A leak of fluid somewhere. Check all lines and hoses for a leak and fix until the pedal is firm and does not loose pressure
Check the switch and/or make sure the parking brake pedal is all the way up if it is not that might be air in your brake lines or leak
A leak in the brake system. Fluid has leaked out and air is now in your lines. This can be from a brake cylinder at wheel or in master cylinder, or even worse a rusted brake line. Check and repair it NOW.
NO, the problem needs to be properly repaired. its not like an oil or antifreeze leak. the basic principle of a brake system is the free movement of fluid through the brake lines. an additive to this system to "stop" a leak would ruin the whole system and be catastrophic to fix. brake leaks are generally an affordable fix.
it depends if it is a metal line or rubber lines , if it is at a fitting or at the master cylinder or abs i can help you find these if you cant locate the leak
For the car with such age it can be anything. I would start from main brake lines. If the lines are fine, check calipers and rear brake cylinders for leaks. If you find any leak it's easier to replace a part, then trying to fix it.