Water in fuel is a huge problem for today’s diesel engines. In many cases water is “free” and not suspended in the fuel and is easily removed by a conventional water separator but in some cases water becomes trapped in the fuel. Trapped or suspended water is an emulsion that no mechanical separator will fix.Dieselcraft Fluid Engineering has developed a new chemical additive that will quickly break the separation between the water and the fuel so it then can be removed by a conventional separator, the company announced.One gallon of Dieselcraft’s DWD Chemical Fuel Water Separator will treat 1,000 gallons of diesel fuel and is sold in 5 gallon pails, 55 gallon drums, and 275 gallon totes, according to the company. The cost per treated gallon ranges from $.06 to $.12.