General Maintenance & Repairs - No Brake Pedal Pressure? HELP

Okay so yesterday I took my formula up to the muffler shop to get my cat back on. (9 miles)

As I got home my brake pedal was feeling odd.
It was really really easy to push down and it took me pushing it to the floor to come to a stop.

I left it in my garage hoping pressure might come back to it over night.
I just went to pull out of my garage and the same thing is happening.

What is the problem?
I need to know now cause i'm suppose to drive it 80 miles tomorrow!

Just checked the brake fluid. Its almost all gone.
Going to go buy some brake fluid.
Do I just fill it up to the mark level on the reservoir?
What kind do I need? The cap says DOT 3. Any good brands?

Just checked the brake fluid. Its almost all gone.
Going to go buy some brake fluid.
Do I just fill it up to the mark level on the reservoir?
What kind do I need? The cap says DOT 3. Any good brands?

sounds like a master cylinder, but i would still have the abs checked. i am not sure if that is one of the symptoms of the module failing,any dot 3 should be fine for fluid.

filled up the reservoir and its all better. :)

Sorry for the hasty post without first researching. I was scared. :(

Check your lines and system over with a fine tooth comb. Brake fluid doesn't just disappear or get used like gasoline. You have a leak somewhere and you need to find it before there is a fire or and accident caused by loss of brakes.