DEi 040200 Radiator Relief Coolant Additive, 16 oz. Bottle

Radiator Relief™ supercharges your radiator by transferring heat more efficiently through the radiator. Similar to the original formula this proven coolant additive will reduce your operating temperature up to 30°F reducing engine wear that occurs during extreme use.

Radiator Relief™ is also formulated with a corrosion inhibitor that reduces mineral deposits. This is the first additive that maintains pH levels that otherwise fluctuate over time resulting in core damage.

• Reduces engine temperature up to 30˚F
• Includes anti-foaming agent
• Formulated with a corrosion inhibitor
• No mixing required; just add to cooling system!
• Reduces pre-existing scale build-up
• Safe with all alloys
• Compatible with water and all types of anti-freeze products
• 100% Biodegradable, Non-Corrosive and Non-Toxic Additive
• For use in all water cooled engines

Radiator Relief Frequently Asked Questions (PDF)

Learn more about how cooling systems work with proper coolant mixture and additives by reading our tech article. Cooling System Principles.  

Some parts are not legal for use in California or other states with similar laws/regulations