Don't drive and take it straight to a garage 'cause it will empty your brake cylinder.
When a brake line is leaking on the Chevy Venture the brake line should be replaced as soon as possible. A leak, however small, can cause hydraulic fluid to escape the brake line which will cause a loss in brake pressure. The brakes should be bled of air after the new line is put in to remove gaps in brake pedal pressure.
The power brake booster is leaking vaccume.
bad calipers change them yesterday not tomorrow
It is not the brakes leaking oil , Its the axel seals leaking rear end gear oil. If its not gear oil , Then its brake fluid and that means wheel cylinders are leaking.
Air brakes are just as effective as a standard set of brakes. The advantages to air brakes are that you do not have to worry about leaking brake fluid.
The power brake booster is leaking vacuum and that makes the engine die when the brakes are applied. Replace brake booster.
It means there is brake problem somewhere, maybe the back brakes.
Axel seals leaking grease on the brake shoes. Wheel cylinders leaking brake fluid. To much brake dust in the drums.
change the wheel cylinders or the brake lines
The brake booster is leaking vacuum pressure. If you look under the hood its black and round and located behind the brake fluid reservoir
Worn brake shoes or pads. A leaking brake pipe. Low brake fluid. Air in the brake fluid pipe.
Worn seal. Replace the caliber and bleed the brakes.