Zerolâ„¢ Ice, a compressor lubricant, is injected into an air conditioning or refrigeration system to enhance the lubricity of the oil, which reduces friction drag in the compressor, the company states. According to the manufacturer, it is compatible with all oils, as well as CFC, HCFC, and HFC refrigerants. One can treats up to 5 tons; multiple cans should be used to treat larger commercial systems, such as packaged units and split systems. Containers can be obtained in a six-can case or a start-up pack, which contains two cans and one Rx11 Injection Tool.

Nu-Calgon Wholesaler Inc., 2008 Alton Court, St. Louis, MO 63146-4151; 800-554-5499 or 314-469-7000 (phone or fax); www.nucalgon.com.

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