Will K-seal stop a thermostat gasket leak?

K-Seal is designed to seal leaks in various engine components, including gaskets, but its effectiveness on a thermostat gasket leak may vary. While it can help seal small leaks temporarily, it's not a permanent solution and may not work on larger or more severe leaks. It's generally recommended to address the underlying issue by replacing the faulty gasket for a reliable and long-term fix. Always consult your vehicle's manual or a professional mechanic for the best advice.