Founded in 1947 and 1921 respectively, Bar's Leaks and Rislone are two of the top names in automotive aftermarket stop-leak and maintenance solutions. With over 146 years of experience combined, we stand above the crowd in premium automotive chemicals. We're well-known, trusted, and have built our company around maintaining the incredibly high product standards you have come to expect from Bar's Leaks and Rislone. Technologies change, but standards should not. Ours don't. And never have.