Duratect is an effective glycol-based, heavy-duty engine coolant for use in vehicles and stationary engine systems containing a synergistic combination of inhibitors that provide corrosion protection against steel, cast iron and aluminum. Anti- scalants and dispersants prevent deposition of inorganic salts on heat exchange surfaces and organic fouling. This product meets the most demanding of industry specifications, conforming to ASTM D 6210/6211 and RP 329/330 of the Technology and Maintenance Council of the American Trucking Association.