Motul Auto Cool Expert -37°C is a long-life, ready-to-use coolant formulated with monoethylene glycol and employing hybrid organic/non-organic additive technology, known as Hybrid Tech. This product is compatible with all monoethylene glycol-based coolants and is recommended for use in all cooling systems, including those in passenger cars, heavy-duty vehicles, construction and agricultural machinery, gardening equipment, ships, and stationary engines.