The brake fluid reservoir on a 1988 Lincoln Town Car 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. Look for a cap that's clearly labeled "Brake Fluid" or has a brake-system-related symbol (often a circle with an exclamation point).
However, before adding any fluid, you should first determine *why* you need to add brake fluid. Low brake fluid usually indicates a leak somewhere in the system, which is a serious safety issue and requires professional attention. Simply topping off the fluid without addressing the leak could mask the problem and lead to brake failure.