The brake fluid reservoir in a 1990 Dodge Dynasty is typically located under the hood, near the master cylinder. The master cylinder is the main component of the braking system, and the reservoir is usually a small, clear or translucent plastic container attached to it. It will often have markings indicating the "MIN" and "MAX" fill levels. Look for a cap that says "Brake Fluid" or has a similar marking.
Important Safety Note: Brake fluid is corrosive and can damage paint. Be careful not to spill it. If you do spill any, clean it up immediately. Also, always use the correct type of brake fluid specified in your owner's manual. Using the wrong type can severely damage your braking system.
