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The DEI Diesel Radiator Relief coolant additive will reduce your operating temperature up to 30°F degrees and reduce engine wear that occurs during extreme heat.
Radiator Relief for Diesels is also formulated with a corrosion inhibitor that reduces mineral deposits. DEI Diesel Radiator Relief maintains pH levels that otherwise fluctuate over time resulting in core damage. (Not designed to be used in place of a dealer recommended additives that replace depleted additives between coolant change-outs.)