With Expertise Built In™, OTR Light Duty Universal Green Antifreeze/Coolant is a premium ethylene glycol-based fluid specially formulated with industry-leading additives to provide optimum performance in specified gasoline, and light and heavy duty diesel engines. This ready-to-use antifreeze and coolant premix protects against corrosion of all cooling system metals, including aluminum. Compatible with all major American brands of conventional coolants, this light duty antifreeze/coolant provides the extra protection your heavy duty truck needs to stay on the road longer. FleetPride is your First Click in Heavy Duty®.