Which statement best describes the difference between a gas turbine lubrication system and a reciprocating engine lubrication system on ships?

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Gas turbines and reciprocating engines operate under very different loads, speeds, and temperatures, so their lubrication needs are different. A gas turbine spins at very high speeds and runs hot, so its oil is chosen to flow readily and carry away heat while still protecting bearing surfaces. This often means a different viscosity grade and a filtration setup tuned to keep the oil exceptionally clean, since even small contaminants can cause wear in high-speed bearings. Reciprocating engines, with heavy piston and crankshaft loads and wide changes in pressure and temperature, rely on oil with higher film strength to maintain a protective lubricating layer under peak pressures and potential fuel dilution or soot. The oil must be thicker and more robust, and the filtration scheme targets keeping particulates and contaminants out of the oil under harsher engine conditions. So the statement that gas turbine lubrication uses high-speed, high-temperature operation with different oil viscosity and filters, while reciprocating engines require heavier oil with higher film strength, best captures the real difference.