A commercially available chemical product designed to address minor leaks within an automotive cooling system. Typically composed of a mixture of particulate matter and binding agents, it is introduced into the radiator to circulate throughout the system. Upon encountering a breach, the particulate matter accumulates at the site, while the binding agents solidify, effectively plugging the opening and inhibiting further fluid loss. This type of product offers a relatively inexpensive and quick solution for addressing small coolant leaks, potentially extending the life of the cooling system and preventing overheating.
The appeal of such a solution lies in its ease of use and potential to prevent more significant and costly repairs. Historically, formulations have varied, with earlier versions sometimes causing clogging of radiator cores or thermostat housings. Modern iterations are designed to minimize such issues, often incorporating smaller particle sizes and additives to prevent clumping. The primary benefit is the temporary or short-term mitigation of coolant leaks, preserving proper engine operating temperature and preventing potential engine damage due to overheating. This buys time to schedule more comprehensive repairs.