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The run-in oil is certainly useful :
First of all, it is necessary to understand the composition of the run-in oil, which is to add a trace amount of grinding powder to the engine oil, (the main ingredient is alumina.)
Also known as corundum and grinding stone, the composition is the same) by increasing wear to reduce the run-in time. However, the run-in with foreign objects is not a natural run-in, there is still a difference, the difference is in the **, we know that the surface of a new engine parts is not smooth.
There are many "hills" under a high-powered microscope. In the process of relative sliding or rolling of two parts, the high hills will break, while some of the lower hills will be stacked, displaced and extruded under the action of mutual forces, and this running-in phenomenon is called "work hardening". The hardness of this work-hardened layer is much higher than before deformation, because the grain density of the metal is increased, so the hardness is also increased accordingly.
However, the hill on the metal surface of the grinding oil is cut off by the abrasive, and the work hardening layer is not formed, so the metal surface of the motorcycle engine with the grinding oil does not have a "hard shell". It will not regenerate in the future, as the hill has been shoveled away, and there will be no more violence to produce work-hardened layers.
Another factor is that the additive alumina is present in the oil in the form of a microsolid, its grain hardness is much greater than that of the aluminum of the piston, and it is embedded in the outer diameter of the piston, although it passes the break-in period.
Normal oil will be used later, but the tiny grinding stones on the surface of the piston will continue to ravage your machine until it runs out.
In foreign countries, the car is not expensive, and the run-in agent is to get through the run-in period as soon as possible and give full play to its performance as soon as possible.
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In fact, it's useless, it's just that there are additives that are more conducive to running-in, how good it is, God knows.
This is a trick for car sellers to make money, if there is good technology, why don't the original manufacturers use it.
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The break-in oil helps the car to get through the break-in period as soon as possible. It's okay to get used to a new car without refueling. When assembling a car, each component is basically produced and processed separately, and there may be process deviations.
When the car rotates, the lubricating oil is not easy to enter the friction surface, causing early running-in, and the running-in period is mostly 1,000 to 1,000 kilometers. The run-in period has a very big relationship with the car, if the run-in is good, it can improve the performance of the car and prolong the life, if the run-in is not good, it may damage the auto parts and cause the problem of car failure. The following is a description of some precautions during the run-in period.
1. Shorten emergency braking. Emergency braking will have an impact on the Hopai brake system that is being run-in, and put a load on the chassis and engine. Especially within 300 kilometers at the beginning of the world, it is better not to brake urgently.
2. Please do not drive on high speeds. During the grinding period, the automobile engine works at high speed for a long time, which is easy to cause wear and tear of parts. 3. Avoid driving at high speeds.
The run-in speed of the new car should be between 40 and 70 km/h, and the engine speed should be between 2,000 and 4,000 rpm. 4. Don't overload. During the run-in period, the load of the car should not exceed 75%-80% of the rated load.
Otherwise, damage to the parts will be caused. Break-in oil is less important for the break-in of the car. As long as it is in accordance with the requirements, the performance of the car will be improved after the running-in period.
The above is all the content introduced by the editor-in-chief, after reading this, do you have a more detailed understanding of whether familiar oils will affect new cars? I hope today's presentation is helpful to you. If it's useful, collect it right away.
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The running-in oil can help the car get through the running-in period as soon as possible, and the absence of running-in oil will not affect the new car.
When assembling a car, each part is machined individually, so there may be process deviations. When the car is driving, it is difficult for the lubricating oil to enter the friction surface, which will cause early running-in, and the distance of the running-in period is more than 1000 kilometers to 3000 kilometers.
The grinding period has a great impact on a car. A good break-in period can improve the performance of the car and prolong the service life. A poor break-in period can damage car parts, leading to car breakdowns.
Next, let's talk about some precautions during the run-in phase:
1.Reduced emergency braking. During emergency braking, the braking system during the run-in will be impacted, and the load on the chassis and the starting counterweight will also increase, especially in the first 300 kilometers, it is best not to brake urgently.
2.Don't run at high speeds. The automobile engine runs at high speed during the running-in period and works at high intensity for a long time, which is easy to cause wear and tear of parts.
3.Avoid driving at high speeds. The run-in speed of the new car should be 40-70kmh, and the starting speed should be 2000-4000rpm.
4.Do not overload. During the run-in process, the load of the vehicle should try not to exceed 75%-80% of the rated load, otherwise the parts will be damaged.
Break-in oil is not so important for car break-in. As long as you do what you do, the performance of the car can be improved after the run-in period is over.
Millions of car purchase subsidies.
Have you ever run in for your new car?
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