The Spectro Scientific TruckCheck fluid testing system provides automated, comprehensive measurement of the condition of engine oil, transmission fluids, power steering fluid and other lubricants. The TruckCheck system, with one-touch operation, can eliminate unneeded oil changes by testing the oil before servicing, determine when in-service oil is no longer fit for use due to liquid contamination or degradation and realize savings in labor, oil, oil disposal costs, equipment uptime and the expenses associated with the purchasing and storing of oil. It provides test data profiles, as well as actionable, corrective advice.