Febi Bilstein 37401 Violet Antifreeze Concentrate - 5 Liters

Purpose and Specifications

Keep your engine running cool and protected with Febi Bilstein 37401, a premium violet G12++ antifreeze concentrate. This 5-liter jug delivers top-tier defense against freezing down to -36°C in a standard 50/50 mix with water, boiling protection up to 107°C, and reliable safeguards from corrosion, cavitation, rust buildup, and foam that can harm pumps and seals.

Approved for major brands including Mercedes-Benz (325.5/325.6), Volkswagen (TL 774 G), MAN (324 Si-OAT), and Scania (TB 1451), it suits modern gas, diesel, hybrid, and electric vehicles. Mix 50/50 with clean drinking or distilled water for best results - never run it pure, as it cuts cooling power in half.

• Freezing protection: -36°C (50/50 mix)
• Boiling protection: 107°C (50/50 mix)
• Service life: Up to 8 years or 250,000 km with proper maintenance
• Shelf life (unopened): 3-5 years in cool, dry storage

When to Use / Replace?

Use Febi Bilstein 37401 in vehicles calling for G12++, Glysantin G40, or matching specs - check your owner's manual. Ideal for high-performance engines in tough weather, from arctic cold to desert heat. Replace every 4-5 years or 150,000-250,000 km, or sooner if coolant turns brown, level drops, or overheating occurs. Flush the system first to avoid mixing issues.

FAQ

Q: Can I mix this with older green G11 coolant?
A: Yes, it's compatible with G11 and G12 types, but for peak protection, flush and refill with fresh 50/50 mix.

Q: What's the ideal mix for extreme cold?
A: Go 60/40 (more antifreeze) for -52°C protection, but stick to 50/50 for everyday balance of freeze and cooling power.

Q: How do I know when to replace it?
A: Watch for discolored coolant, low levels, or engine temps creeping up - service at 4 years/150,000 km to prevent costly repairs.