Test Spot oil analysis kits provide nine high-quality chromatographic filtration tests for vehicle fluid — three test spots for three types of fluid. These lab-certified kits instantly provide visual and comparative diagnostics of fluid cleanliness, additive depletion and glycol or fuel dilutions for an end user’s preferred brand of engine oil, transmission, brake, steering, differential, transfer case and hydraulic fluids. The kits are available at www.oilcheckup.com.