Pro CCA Ultra is an advanced corrosion inhibitor specially formulated for use in the cooling systems of race and competition engines. It provides corrosion protection for all metals normally found in cooling systems and is harmless to seals, elastomers and all other non metals used in the cooling circuit. Pro CCA Ultra may be used at 3-5% in water. Advanced inhibitor system protects all metals. Compatible with all non metallic materials. Suitable for many racing applications. Keeps heat transfer surfaces clean and corrosion free. Helps prevent cavitation in water pumps and galleries. Lubricity agents help to reduce wear of radial seals. Compatible with Silkolene Pro Cool antifreeze.