Purpose and Specifications

LIQUI MOLY 3970 Copper Grease is a high-performance aerosol spray that prevents seizing, galling, and corrosion on metal parts like bolts, brake components, and exhaust studs. This 250ml can delivers a tough copper coating that handles extreme heat up to 1100°C, making it perfect for high-stress engine and chassis applications.

• Key Benefits: Stops rust and fusion in harsh conditions, resists hot/salt water, and eases disassembly after years of service.
• Practical Protection: Ideal for temperatures from -30°C to 1100°C, with a shelf life of 4 years unopened.
• Easy Application: Aerosol format sprays evenly for quick coverage on threaded fasteners and sliding parts.

When to Use / Replace?

Apply during assembly of brakes, spark plugs, cylinder heads, or any hot-running parts to avoid stuck bolts later. Reapply every 12 months or 20,000 km in salty/wet environments, or whenever disassembling heat-exposed components. Replace if grease hardens or loses adhesion after heavy use.

Frequently Asked Questions

Is this safe for all metals? Yes, it works on steel, aluminum, and titanium without causing damage, but avoid plastic or rubber seals.

How much coverage per can? One 250ml can coats hundreds of bolts generously, perfect for multiple jobs.

Can it handle daily driving heat? Absolutely, it shines in exhaust and brake systems where temps exceed 500°C regularly.