Oil additives for aircraft engines
With the correct oil friction losses in an engine are reduced to a minimum. This is done by taking into consideration circumstances as engine usage, ambient temperature, time of year and climate, location and engine design. The engine manufacturer usually recommends a certain type of oil to use regarding different circumstances.
Lubricating oil plays an important part in the life of the engine and during maintenance it will be replaced, on certified aircraft the pilot can only replenish it.
Without lubrication the engine would fail within minutes, keeping a watchful eye on the instruments during flight is therefore important.
Engine oil comes in many forms: synthetic, mineral or a combination of both. Each with their own unique properties and the most important one is viscosity, which determines its readiness to flow at different temperatures.
To enhance the properties, special formulated additives are added which contain friction reducers, high pressure and anti-wear compounds to name but a few.
Having a basic understanding of engine oil is a must for the professional and private pilot, here we can only scratch on the surface of a very interesting subject.
Engine oil performs a number of functions in the engine: lubrication, cooling, cleaning, sealing, corrosion protection, noise reduction and propeller operation. The most important being lubrication. Without oil all moving parts of the engine would be in direct contact and wear out very rapidly. Oil forms a layer between the parts and reduces friction. You can visualize oil as millions of tiny, molecular size, ball bearings rolling between the moving parts of the engine. The size of these balls is determined by the clearances in the engine and dictates which viscosity the oil must have for a long service life.
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How Oil cooler in an aircraft engine work?
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