RAVENOL HTC Hybrid Technology Coolant Premix -40°C is a ready-to-use, prediluted with water, eco-friendly, 1.2- Ethanediol (monoethylene glycol) based amine and phosphate-free, all-season coolant with frost and rust protection for Mercedes, BMW, Opel, Saab and General Motors engines. This product is formulated based on a proven inhibitor development by combining silicates with the organic additiv...