2000dodgecarvan wheres brake fluid go - 1992 Oldsmobile Ninety Eight

I am going to have to guess you are referring to a 580 C Case backhoe.
In any case never ever put anything in a brake fluid reservoir but brake fluid, and the right fluid to be sure, or you will seriously damage or destroy the brakes "forever".
The brake fluid reservoir is usually plastic, and often you can see through it just enough to see the level of brake fluid.
It should be located near the front of the brake pedal, and is usually sort of white in color, with a black cap that can be screwed off.
God bless your efforts.

You need to add BRAKE fluid. After that, blead your brakes. You need to find out where the brake fluid went. If there are no leaks, you need to check the remaining life on all four brake sets. If you have no leaks, chances are pretty good that you need new brakes.

POUR BRAKE FLUID IN THE CLUTCH MASTER CYLINDER WHICH IS BRAKE MASTERCYLINDER THATS WHERE YOU POUR CLUTCH FLUID WHICH IS BRAKE FLUID.

First important thing to do is find out where the brake fluid goes when it's leaking from the master reservoir. Fill the reservoir then have an assistant pump the brake while you look at the braking system circuit i.e:1. the 4 tires. Is there brake fluid on any of them? If yes then the wheel cylinder is leaking.2. the brake lines and hoses3. the masterAs said earlier, where the fluid is leaking out is where the problem is.

The brake fluid goes in the brake master cylinder. (Fluid Reservoir)

There are pictures on pages 197 and 198 in the Owner's Manual (depending on which engine you have) they will show you exactly where this reservoir is located.

If you do not have an Owner's Manual, you can download a FREE PDF version: click HERE.

Also note that you should NEVER have to add brake fluid to your car. If the fluid level is low, then there is a leak in the system that MUST be diagnosed and repaired IMMEDIATELY! Failure to immediately repair a fluid leak in a brake hydraulic system can lead to serious personal injury, property damage, or DEATH!

Please also review this article:

What Else Could Be Wrong?

LOOK UNDER THE HOOD LOOK FOR POWER BRAKE BOOSTER.ON FIREWALL ON DRIVER SIDE.YOU WILL SEE BRAKE MASTER CYLINDER BOLTED TO THE POWER BRAKE BOOSTER UNIT. POWER BRAKE BOOSTER LOOK LIKE A LARGE METAL BOWL.YOU WILL SEE BRAKE MASTER CYLINDER WITH A PLASTIC RESERVOIR WITH A COVER SAY BRAKE FLUID THATS WHERE YOU ADD YOUR BRAKE FLUID.

it is located on your driver side on the fire wall...right where u put brake fluid in....not the canister but behind it...its a big round thing ....hope this helps

that is your brake fluid reservior. if you have fluid and no brake noise you may have a faulty mastercylinder. the first thing i would check is to make sure the vaccum hose to the brake booster is connected to the brakebooster and to the rear of the engine (since you did not know where your brake fluid reservior was the master cylinder is the meatal part that holds the reservior and the brake booster is the big round bubble that the master cylinder is bolted to) hope this helps you out.

WHEN YOU OPEN YOUR HOOD LOOK DOWN THE DRIVER SIDE FENDER THEN LOOK LEFT ABOUT 10 INCHS AND YOU SOULD FIND IT IT WILL BE WHITE IN THE ENGINE COMPARTMANT AREA

Open your hood and look for a small container (5-6 oz) with fluid inside usually close to the front window of the car. On the top it will say Dot 3 fluid only, or something to that effect. This is where your brake fluid goes in. Fill it within 3/4 inch of the top of the "container". You should also check your brakes. It could be your fluid is low, due to your brakes being worn out. Check both front and rear.