Uneven braking, noise and chattering can be caused by brake shoe and pad lining dust, brake fluid seepage and slippery road film that contaminates brake drums and discs. Use STP Heavy Duty Brake Parts Cleaner to quickly dissolve and wash away lining dust, brake fluid, oily road film and grit to leave brake surfaces clean without disassembly. The unique formula will help improve brake action for a smoother, surer, more dependable performance. There’s no need for disassembly when using this brake parts cleaner. Just remove the wheel or brake drum, protect rubber parts from spray and place a drip tray underneath.