Lucas Engine Oil Stop Leak is a unique formulation of Lucas additives and base stocks designed to stop leaks in engines. It is also an exceptional additive for worn and older engines, reducing engine noise and oil consumption while raising oil pressure. It contains no harmful solvents and can actually extend engine oil life by 50% or more.
 
• Compatible with petroleum, semi-synthetic and full synthetic motor oils
• Renews worn seals with no risk of damage or eventual corrosion
• Reduces engine noise and oil consumption, while raising oil pressure
• Contains no harmful solvents