【Owner's home car knowledge】Most Japanese car 4S stores tell domestic car owners that you should change the oil every 5,000 kilometers. But have you car owners studied whether it is really necessary to change the oil at 5000 kilometers? Or is it too late to change the oil at 5000 kilometers? This article will introduce a simple, feasible, economical and affordable method of oil quality testing. It only costs 10 cents each time, so that everyone can keep abreast of the situation of their car.
The magic weapon of engine oil detection - slow qualitative test paper:
This test paper is used for the determination of ions and chemical components, and it can determine whether a sample contains a certain amount of a certain substance. Some of these test strips allow non-destructive determination of the substance being tested.
We use this kind of test paper to test the engine oil to measure the condition of different components contained in the engine oil, so as to judge whether the engine oil has aged.
These test strips are available online. There are different prices depending on the diameter of the test strip. Generally, we can use slow qualitative test paper with a diameter of 9-11cm, and the price of a box of 100 sheets is about 9-11 yuan. One piece of test paper is required for each oil inspection, which means that the
【Owner's home car knowledge】Most Japanese car 4S stores tell domestic car owners that you should change the oil every 5,000 kilometers. But have you car owners studied whether it is really necessary to change the oil at 5000 kilometers? Or is it too late to change the oil at 5000 kilometers? This article will introduce a simple, feasible, economical and affordable method of oil quality testing. It only costs 10 cents each time, so that everyone can keep abreast of the situation of their car.
The magic weapon of engine oil detection - slow qualitative test paper:
This test paper is used for the determination of ions and chemical components, and it can determine whether a sample contains a certain amount of a certain substance. Some of these test strips allow non-destructive determination of the substance being tested.
We use this kind of test paper to test the engine oil to measure the condition of different components contained in the engine oil, so as to judge whether the engine oil has aged.
These test strips are available online. There are different prices depending on the diameter of the test strip. Generally, we can use slow qualitative test paper with a diameter of 9-11cm, and the price of a box of 100 sheets is about 9-11 yuan. One piece of test paper is required for each oil inspection, which means that the material cost for each inspection is about 10 cents.
The method of testing:
Take out the oil dipstick, drop a drop of oil on the slow qualitative test paper, place the test paper horizontally, and wait for 24 hours.
The 3 rings that will appear on the test strip:
If the used engine oil is dropped on the test paper for the above operations, we will find that after 24 hours of standing still (note: please hang the back of the filter paper in the air, so as not to affect the test results. It is a good way to use a cup to hold it.), the following prompts will appear on the test paper. to the three important ring-shaped regions.
1. The sedimentary ring is in the center of the spot where the coarse particle impurity deposits in the oil are concentrated. The degree of oil pollution can be roughly judged by the color of the sedimentary ring.
2. Diffusion ring The ring around the sedimentation ring is called the diffusion ring, which is the trace left by the outward diffusion of fine particle impurities suspended in the oil. The finer the particle, the farther it spreads. The width of the diffusion ring and the uniformity of the color are important factors, which represent the ability of the additive in the oil to disperse the pollution impurities.
3. The oil ring is on the periphery of the diffusion ring, and its color ranges from light yellow to brownish red, indicating the degree of oxidation of the oil.
Four grades indicating the quality of the oil:
Level 1:There is no obvious boundary between the deposition area and the diffusion area of the oil spot, the entire oil spot is uniform in color, the oil ring is light and bright, and the oil quality is good.
Level 2:The deposition ring is dark in color, the diffusion ring is wide, and there are obvious dividing lines, and the oil ring is yellow in different depths. The oil has been polluted, and the engine oil can still be used.
Level 3:The sedimentary ring is dark black, the sediment is dense, the diffusion ring is narrow, the oil ring becomes darker, and the oil quality has deteriorated.
Level 4:Only the central sedimentary ring and oil ring, no diffusion ring, the sedimentary ring is dense and thick black deposits, not easy to dry, the oil ring is dark yellow and light brown, the oil quality has been oxidized and deteriorated.
Test results: When the spot test reaches level 3, it needs to be replaced. Generally speaking, it is difficult for the engine oil of a car to have the condition of grade 3. If the condition of grade 3 appears, it means that the quality of the engine oil has deteriorated seriously. Change the lubricating oil when it becomes narrow. This can better save costs, but also help to extend engine life.
About the oil spot test:
The spot oil test is an obsolete oil test method. However, this method has strong operability, simple and intuitive, and low cost, and has a certain scientific basis. More importantly, this test method is relatively easy to operate for ordinary car owners, and does not require advanced identification knowledge.
Conclusion:
Through the introduction of this article, you should know how to test the oil of your car. Regularly check the engine oil of your car, on the one hand, you can determine the reasonable timing of oil change, and also avoid the waste of lubricating oil caused by premature oil change. The analysis of abnormal phenomena of engine oil can detect and eliminate hidden troubles of the engine early, and improve the reliability and working life of the engine. If you think this method is practical and feasible, try it immediately.
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