Diesel power plants find wide application in fields like mobile plants, nursery station, emergency plant, stand-by-units and starting stations. These plants are more economical due to their higher overall efficiency. The diesel fuel and lubricating oil form a major element in the operation of every power plant. They provide a single, comprehensive solution for diesel fuel lubricity testing and fuel oil analysis and include sampling fuel oil during delivery as well as testing the lubricating oil for contamination and degradation.