Adhesives, Sealants and Tape

Lucas Engine Oil Stop Leak (high mileage top off additive) is a premium lubricant formulated to meet SAE 5W-30 API SN motor oil standard*, blended from both API Group II base oil (petroleum or conventional), as well as API Group III base oil (synthetic), with an added feature a high quality seal swell agent. Certain High Mileage motor oils have this feature, but what distinguishes Lucas product is that it has sufficient seal swell additive to treat all the oil in a typical engines crankcase. Many older, high mileage cars still perform well, but may develop an annoying oil leak. More a nuisance than a serious mechanical problem, the leak can be hard to find and if found, difficult to repair due to the complexity of modern engines and their O-rings, seals and gaskets. These leaks not only require the occasional extra quart of oil, but stain driveways and add to pollution on city streets. Most of these leaks can be stopped with the use of Lucas Engine Oil Stop Leak which conditions, swells and softens seals, gaskets and O-rings. The use of this product will not dilute the additives in your motor oil. Engine Oil Stop Leak contains detergents, dispersants and anti-wear additives, like any high-quality motor oil. *Note, though formulated to the standard, this product is not licensed with API.