Cat ELC Advanced is a coolant developed, tested, and approved by Caterpillar to meet the same rigorous standards as all Genuine Cat Parts. It features advanced metal protection through a specialized formula that incorporates organic acid additive inhibitors, ensuring maximum protection for copper, solder, brass, steel, cast iron, and aluminum. The coolant also offers excellent passivation and flux compatibility, making it suitable for use with CAB brazed materials and providing fast passivator properties. Additionally, it delivers outstanding protection for aluminum, particularly in high-temperature applications, and effectively eliminates nitrite depletion. Do NOT Add Water to dilute. Contains Bittering Agent