Purpose and Specifications

LIQUI MOLY 2671 Engine Oil Additive is a specialized stop-leak treatment designed to restore and regenerate rubber and plastic seals throughout your engine. This 300 ml bottle treats up to 5 liters of motor oil and works by softening hardened seals that develop brittleness over time due to constant temperature changes.

The additive addresses three common causes of oil consumption: deposits stuck on piston rings that prevent proper sealing, worn valve stem seals that have lost their flexibility, and general compression loss from engine wear. By restoring seal integrity, it reduces oil leaks, prevents smoking, and lowers engine noise.

• Capacity: 300 ml (treats up to 5 liters of oil)
• Container Type: Metal tin
• Product Line: Öl-Verlust-Stop (Oil Loss Stop)
• Brand Category: Premium
• Manufacturer Part Number: 2671
• EAN: 4100420026713

When to Use / Replace?

Add one 300 ml can to your engine oil at any time—no oil change required. After adding, run the engine until it reaches operating temperature. The sealing effect becomes noticeable after approximately 600–800 km of driving. For lasting protection, LIQUI MOLY recommends adding this product again every 30,000 km as preventative maintenance.

This additive is suitable for both gasoline and diesel engines. However, it is not suitable for motorcycles with wet clutches, as it may interfere with clutch operation.

Frequently Asked Questions

Q: How long does it take to work?
A: Sealing effects begin after approximately 600–800 km of normal driving. Full effectiveness is achieved through regular use.

Q: Can I use this with any motor oil?
A: Yes, this additive is compatible with all commercially available motor oils. Simply pour it into your existing oil—no mixing equipment needed.

Q: How often should I use it?
A: Add it once, then repeat every 30,000 km for ongoing seal protection and to prevent oil consumption from returning.