Lucas Engine Oil Stop Leak is a specially formulated blend of additives and base stocks designed to renew worn seals and stop oil leaks without risk of damage or corrosion. This solvent-free formula is compatible with all motor oil types and can extend engine oil life by up to 50%.

• Renews worn seals with no risk of damage or corrosion
• Compatible with petroleum, semi-synthetic, and full synthetic motor oils
• Reduces engine noise and oil consumption
• Raises oil pressure in worn engines
• Contains no harmful solvents
• Also works in automatic transmissions and hydraulic systems
• Use 20% of system capacity (1 qt to 4 qts oil)
• Allow up to 200 miles for full effect