Misunderstanding about car oil

First car diagnostic auto scanner, only add but not replace lube oil

There are many car owners only pay attention to check the lube oil quantity, according to the standard, but without paying attention to check the oil quality, ignore replacing the deteriorated engine oil, resulting in some of the engine’s moving parts are always in poor lubrication operating environment, thereby increase the wear of lubricated parts. Engine oil must be strictly in accordance with the manufacturers required mileage and timely replacement, in general, the car is driving 3500-5000km, and it should be replaced.

Second, add lube oil as much as possible

Engine oil is too lack everyone known to harm car. So some owners fear starvation oil that think add more oil than less and better, therefore, often not required to refuel make oil more than the standard. In fact, too much oil has many hazards: 1, when cars drive with crank stir to make a bubble and oil deterioration, increased resistance to rotation of the crankshaft, so the engine will not only increase fuel consumption, but also reduce engine power. 2, due to the oil on the cylinder walls of the combustion chamber went to increase, so that oil consumption increases. 3, accelerates the formation of coke combustion chamber. The engine is easy to produce deflagration. Therefore, the engine oil is rather more no less is misunderstanding, generally oil level should be maintained at the appropriate scale slightly below the oil dipstick, oil level is too high will be counterproductive.

Third, the higher the better lubricant viscosity

To prevent wear of the contact surface between moving parts, the oil must have sufficient viscosity to at various operating temperatures can form a film between the moving parts. But shall not exceed the level of lubricating viscosity affects the engine started, and require minimal friction generated under conditions of continuous operation. Oil viscosity increases too large mechanical wear, which is due to: 1, the engine lubricating oil viscosity is too large, slow-moving, upstream slowly through the small amount, cannot be added to the two friction surfaces. 2, when the lubricating oil viscosity is too large, the mechanical friction between the friction is increased, to overcome the increased friction need to more consumption of fuel, while also reducing the engine’s power output. 3, if the oil viscosity is too large, the oil circulation rate will slow cooling and heat dissipation backward allscanner, easy to make the engine overheat.4, if oil viscosity is too large, the cycle speed is slow, oil filtration through the number is less, it is difficult in a timely manner will wear down the metal end of the debris, carbon particles, dust cleaned out from the friction surface. Therefore, does not use engine lube oil viscosities is too large, it cannot be considered the better viscosity. In ensuring lubrication conditions, when used according to the temperature range, as possible as use the small viscosity lubricants. But for more serious wear and tear has been the gap has been relatively large engine, may be appropriate to choose a slightly larger viscosity lubricant.

Forth, luxury cars must use imported lube oil

Some owners believe that the high cost of high-end cars, and a good quality of imported oil, the use of imported oil safer, more insurance. In fact, evaluation oil quality is not good or bad is not to see its advertising efforts, but rather depends on the quality indicators and the actual results. So luxury car should be based on the car working conditions and technical specifications selection of appropriate technical performance quality lubricants.

Some car diagnostic tools can help you test your car by yourself, such as:

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