CALPAR™ paraffinic base stocks are produced exclusively by Calumet and manufactured using select paraffinic crude streams. This process offers the unique ability to produce paraffinic base stocks that meet currently established performance standards as well as standards to be developed in the future. Over 30 years of history manufacturing paraffinic base stocks, Broad range of viscosities available from 40 SUS at 100°F to Bright Stock.