Cummins Filtration offers two types of cleaners to keep your cooling system in top condition. Restore Plus removes contaminants without harming metal surfaces, gaskets, hoses or plastic parts. They are also approved by Cummins as the preferred product for cleaning oil contaminated cooling systems under warranty maintenance. KEY FEATURES: Mild Acid-Based Chelating Cleaner *Safely Removes Rust, Corrosion, Scale, and Solder Bloom – Without Disassembling your Cooling System Most Effective Cooling System Oil/Fuel Contamination-Cleaning Agent on Market More Effective than Automotive Distributor Detergent Powders Safe for Use in Aluminum Radiators and Heaters Removes Silicate Gel Approved by Cummins