42 Testing and inspection of oil rig equipment, namely, DOT checks, Radiator inspection, engine inspection, oil sample inspection, inspection of hydraulic system, inspection of transmission, inspection of power end, inspection of fluid end, inspection of gauge panel, inspection of chassis and running gear, inspection of air system, and inspection of electrical components and cables; oil rig equipment testing and operation temperature testing, namely, pump endurance testing, technical verification of suction pressure range, engine pressure and temperature technical verification, Fan RPM technical verification, technical verification of warm-up run operation temperatures, pressure, and gear shifts, engine operation testing of lube oil pressure, water temperature, and horse power, transmission operation testing of lube oil pressure, lube oil temperature, and shaft RPM, power end operation testing of lube oil pressure, lube oil temperature, and discharge PSI