Engine lubrication is via a dry sump oiling system. Finishing operations can include oiling, brushing, buffing, coating, polishing, embossing, glazing, or tumbling, among others. Sessions can include shampooing, oiling, combing, braiding and twisting, plus adding accessories. The surfaces are then finished by sanding, scraping, staining, oiling, or lacquering. The oiling and drying steps could be repeated. Hours would be spent washing, combing, oiling, styling and ornamenting their hair. A dry sump oiling system is used. He initially found a job oiling machines and washing floors. All blued parts still require oiling to prevent rust. This meant that conventional clocks had to be stopped frequently for cleaning and oiling. Further improvements in later years included new pistons, rods, crankshaft, and an in-pan oiling system. Its oiling gear, hoses and fittings were too often poorly designed. Additionally, palm oil and palm kernel oil were popularly used for oiling the scalp. Sometimes the surface is enhanced by waxing, oiling, or other types of lacquers or clear-coats. High running plates along the boiler were retained for ease of oiling and maintenance.