Restores gaskets and seals to stop and prevent engine oil leaks.

Works with all types of motor oil. Engine components can wear down over time, and eventually cause leaks. Bar’s Leaks Engine Oil Stop Leak Concentrate is specially formulated to stop and seal motor oil leaks caused by normal engine wear and age. It not only stops leaks, but also prevents them by conditioning and restoring gaskets and seals. Our products are time-tested and proven effective by the tens of millions of customers we’ve served in nearly 70 years of doing business. Bar’s Leaks® Engine Oil Stop Leak Concentrate – 11 oz.