HD Expert Premium 35% Premix Coolant is a high-performance, luminescent green coolant with Hybrid technology that is more durable than conventional and organic acid (OAT) coolants. It is low in silicate, free from phosphate and amines, and compatible with aluminum engines. Suitable for automotive, light-duty, and heavy-duty diesel applications, it is recommended for trucks, buses, off-road vehicles, farm equipment, marine engines, and mining machinery. This coolant uses the same corrosion additives as the 50% version, maintaining OEM approval.