We are involved in rendering a broad array of Milcy Fleet 15W40 Premium Diesel Engine Oil. It is used to prevent sludge build-up on internal surfaces. In addition to this, provided oil is able to control and lubricate. It is less volatile than the fractions used in gasoline. Milcy Fleet 15W40 Premium Diesel Engine Oil reduces friction which tends to increase wear. It is made with a premium quality of low ash gas engine oil.