Power steering stop leak is specially formulated to eliminate hard spots in power steering lines and stop seal leaks in power steering units. If you have a leak in your power steering seals or hoses and the fluid level gets low, the power steering pump may start to pull in air, which may result in squealing or clunking sounds. This may eventually lead to damage, requiring you to replace the power steering pump. Power steering stop leak offers a convenient solution; just add to the power steering fluid reservoir and drive the vehicle like normal. If the damage is too severe, you may have to perform a more complete repair to your power steering system. At O'Reilly Auto Parts, we carry power steering stop leak, power steering pumps, hoses, and seals, and other related parts for all your power steering needs.