Ensuring you are Ready for the Road Ahead™, OTR Light Duty Universal Green Antifreeze/Coolant is a premium ethylene glycol-based fluid specially formulated with industry-leading additives to boost optimum performance in specified gasoline, and light and heavy duty diesel engines. This antifreeze and coolant concentrate safeguards 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®.