LIQUI MOLY KFS 11 Antifreeze Concentrate – Premium Engine Protection

Purpose and Specifications

LIQUI MOLY KFS 11 is a professional-grade radiator antifreeze concentrate designed to protect your engine's cooling system year-round. This ethylene glycol-based formula prevents freezing in winter, stops rust and corrosion, and protects against overheating in summer. It works by lowering the freezing point of coolant and raising its boiling point, keeping your engine safe across extreme temperature ranges.

• Freeze Protection: Mix 1 part concentrate with 2 parts water for -20°C protection, or 1:1 ratio for -40°C protection
• Operating Temperature Range: Protects from -68°C to +174°C (boiling point)
• Corrosion Protection: Amine-, nitrite-, and phosphate-free formula prevents rust in cast iron, aluminum, and mixed-metal engines
• Shelf Life: 60 months in original sealed container when stored at -20°C to +35°C
• Volume: 5-liter concentrate canister
• Compatibility: Works with Alfa Romeo, Audi, BMW, Chrysler, Fiat, Iveco, Lancia, Mercedes-Benz, MAN, Volvo, Volkswagen, and many commercial vehicles

When to Use / Replace?

Use this concentrate when your cooling system needs refilling or a complete flush. Always dilute with distilled water before adding to your radiator—never use undiluted. Follow your vehicle manufacturer's coolant change interval, typically every 2-3 years or 40,000-80,000 km. Replace immediately if coolant appears rusty, cloudy, or has lost its color, as this signals breakdown and loss of protection.

How to Mix: For most climates, use a 50:50 ratio (1 part concentrate + 1 part distilled water) for balanced frost and corrosion protection. Adjust the ratio based on your local winter temperatures using the mixing table provided.

Frequently Asked Questions

Q: Can I mix this with other coolants?
A: Yes, LIQUI MOLY KFS 11 is miscible with other ethylene glycol-based coolants. However, for best results, flush your system completely before switching brands.

Q: What water should I use for mixing?
A: Distilled water is recommended to prevent limescale buildup. Tap water is acceptable only if your local water hardness does not exceed 20°dH (3.56 mmol/l).

Q: How do I know if my coolant needs replacing?
A: Check your owner's manual for the recommended interval. Signs of degradation include discoloration, rust particles, or a sweet smell indicating leakage. Replace if protection drops below -20°C or if the coolant appears contaminated.