Purpose and Specifications

LIQUI MOLY 20451 Valve Protection for Gas Vehicles is a specialized fuel additive designed to protect engine valves in gasoline-powered cars. This 1-liter tin container treats fuel tanks holding 25 to 75 liters (7 to 20 gallons).

This additive works by lubricating engine valves and preventing overheating in the cylinder head area. It reduces the risk of carbon buildup, maintains engine compression, and helps avoid costly valve damage or engine failure. The formula contains no heavy metals and is safe for catalytic converters and turbochargers.

• Key Benefits: Protects valves from heat damage, improves lubrication, maintains engine performance, prevents compression loss
• Safe for: All gasoline engines with 2 and 4-stroke designs
• Compatibility: Works with catalytic converters and turbochargers without harm

When to Use / Replace?

Add this additive to your fuel tank every 2,000 kilometers (1,200 miles) or during regular service intervals. One 1-liter bottle is sufficient for 25 to 75 liters of fuel, depending on tank size. For best long-term protection, use consistently with each fill-up or at minimum every service cycle.

Storage: Keep in a cool, dry place. The product maintains effectiveness when stored properly in its original tin container.

Frequently Asked Questions

Q: How often should I use this additive?
A: Add it every 2,000 km or at your regular service interval. One liter treats a full tank for most vehicles.

Q: Will this damage my catalytic converter?
A: No. LIQUI MOLY 20451 is tested safe for catalytic converters and turbochargers.

Q: What happens if I don't use valve protection?
A: Without protection, engine valves can overheat and accumulate deposits, leading to compression loss, poor performance, and expensive repairs.