1997 Buick Regal Owner's Manual - Page 306

NOTICE: e Using the wrong fluid can badly damage Brake Wear Your Buick has four-wheel disc brakes. 0 brake system parts. For example, just a few drops of mineral-based oil, such as engine oil, in your brake system can damage brake system partsso badly that they'll have to be replaced. Don't let someone put in the wrong kindof fluid. If you spill brake fluid on your vehicle's painted surfaces, the paint finish can be damaged. Be careful notto spill brake fluid on your vehicle. If you do, wash it off immediately. See "Appearance Care" in the Index. Disc brake pads have built-in wear indicators that make ahigh-pitched warning sound when the brake pads are worn and new pads are needed.The sound may come and go or be heard all the time your vehicle is moving (except when you are pushing on the brake pedal firmly). The brake wear warning sound means that soon your brakeswon't work well. That could lead to an accident. When you hear the brake wear warning sound, have your vehicle serviced. I NOTICE: ~~ Continuing to drive with worn-out brake pads could result in costly brake repair. 6-30