Hy-per Cool™ by Rislone® is a radiator cleaner and super flush that improves the cooling system's performance by removing buildups that cause overheating. The heavy-duty formula is specially designed to clean deposits from adhesive materials, greasy residues, rust, and scale.

It contains lubricant for the water pump and corrosion inhibitors, ensuring it will not damage the pump as other brands do. It is fast, easy, and safe to use on all cooling system materials, including plastics and aluminum. Compatible with all cooling systems.

• Removes harmful deposits from the cooling system, reducing engine operating temperature and preventing overheating.
• Neutralizes acids that cause corrosion and helps prevent the formation of future deposits.
• The heavy-duty Heavy Duty Xtreme Clean™ formula cleans the entire cooling system.
• Removes deposits and antifreeze gel for cleaning in 30 minutes or less.
• Recommended for use with every coolant change, for both light flushing and intensive cleaning.

Clean systems run cooler.