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These engines were designed to have a total-loss lubrication system, with the motor oil held in a separate tank from the fuel in the vehicle, and not pre-mixed with it as with two-cycle engines, but mixed within the engine instead while running. Castor oil was often used because it lubricates well at the high temperatures found in air-cooled ...
An oil tanker's inert gas system is one of the most important parts of its design. [18] Fuel oil itself is very difficult to ignite, however its hydrocarbon vapors are explosive when mixed with air in certain concentrations. [19] The purpose of the system is to create an atmosphere inside tanks in which the hydrocarbon oil vapors cannot burn. [18]
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