Choosing the engine oil is sometimes quite confusing, because of ignorance of the specification we will use oil. An understanding of engine operating conditions used, as well as knowledge about the specifications of oil, could help solve this problem misgivings.
As we know that the engine oil is a very important role as koeffisien minimize friction between the machine elements intersect, a cooling agent in the engine room, to avoid rust, make sure to avoid wearing on the surface of the element and so on.
In addition to the above requirements the engine oil when the engine operates, always be in environments that have high temperature due to the combustion process in the combustion chamber. The combustion process also leads to oxidation reaction and cause Radicals, or compounds which usually arise due to the reaction heat effect, top 1 oli sintetik mobil-motor indonesia thus causing degradation of engine oil. To maintain the quality of oil was needed reaski oxidation-preventing additives.
Besides the blow-by gas that is entering the combustion gases to the engine room containing the fuel does not burn completely, are likely to be soot or particulete, to avoid the particulate clumping so that it becomes its own problems, engine oil additives will also need the anti-forming clumps. In addition to the diesel engine, which allows the sulfur contained quite a lot then the engine oil for this type require neutralizing sulfur additive.
As it is known that elements such as engine piston-ring and cylinder-liner, connecting rod tip, then the cam-nose and rocker-arm is touching each other. For such parts, lubrication of the fluid that is flowing into the lubrication surface where the flow is very limited. Condition of existing types of lubrication in the engine room, should respond to one type of engine oil only.
For these types of surface lubrication, high viscosity engine oil which would be more suitable for wearing to protect from the elements, but the high viscosity engine oil which becomes an obstacle to the rotating elements which lowers the fuel efficiency of the system itself. Conversely a low viscosity or thin, good for fuel efficiency, but allows higher engine elemental damage caused friction between the possibility of larger elements. So that engine oil needs in the conditioning to be able to respond to the type of lubrication is required as above. For example with the addition of additives ZDTP to protect the parts that intersect like the cam.
Code of an engine oil viscosity, is usually written out of oil cans. The part which is the letter W, a viscosity index were tested with testing system Cold Cranking Simulator (CCS) is performed at low temperatures below zero, for example 10W, 20W, 5W or 0W. The smaller the number on it the more dilute the engine oil. Or the easier the engine starter. But when viewed in its specific usage problems in Indonesia and not in the highlands, oil standard without CCS is also sufficient. If signs of consistency, do not use the letter W, then the oil was only tested with the standard at a temperature of 100 degrees C. The smaller the number, the more dilute, suitable for effisiency emphasis on fuel, but less well to protect the machine elements that are touching each other.
So really from a technical standpoint, to Indonesia which does not encounter the cold temperature, is sufficient to see oil specification with code numbers without the letter W. But in real usage back to the user satisfaction, whether using double standards, or simply by a single standard without testing CCS.
Today almost all synthetic oil they follow the lower grade and sell it for synthetic oil.
Without seeing the type and quality of oil used, the problem is that there is fuel in the combustion chamber is not completely evaporated, so not everything is on fire. Residual fuel oil and blowby will wet the piston ring and cylinder wall, so that the oil dissolves dry, until the friction between the piston ring to cylinder wall nobody restrain, rapid wear and damage.
The main point is how to make fuel oil that is inserted into the combustion chamber to evaporate (approaching 100%), so that complete combustion will occur, there is residual fuel. Se moderen2nya new artificial motor, it still can not make perfect fuel evaporates in the combustion chamber (depending on the quality of fuel), even more so if there is a mix petrol + kerosene, the machine will quickly be damaged or its performance degrades quickly. |
