Can I use the remaining engine oil every time I maintain my car?

Yes. 1. The influence of moisture on engine oil, many additives in engine oil will fail because of moisture, accelerating the process of oxidation and deterioration of engine oil, and the substances produced after oil oxidation will further affect engine oil, so that the vicious circle continues. Under normal circumstances, the water content in the oil is below, and when the water content is exceeded, the additives in the oil are invalid.

Then there is oxygen, the oxygen mentioned here exists in a variety of forms, and water, oxygen is also a variety of additives in the engine oil, and don't think that there are only good oil additives, and there are additives in any engine oil. Especially when exposed to sunlight or high temperatures, the oxygen in the air reacts more quickly with the oil.

2. You can find a thin plastic bag, fold it in half a few times but not too thick, put it on the bottle mouth and then screw on the bottle cap, so that the sealing effect will be better. At the same time, it is important to keep the oil in a dry, cool, and sunny place. At the same time, when using such oil, be careful not to add it all, and do not "shake it before adding".

Because after long-term storage, impurities and moisture will precipitate at the bottom, so don't add them all at this time.

Hello: Yes, but there is a trick, add the leftover oil first each time so that the oil will not last too long.

It is absolutely okay to use the same oil every time, but seal the rest every time, so as not to enter impurities, it is recommended not to use it next time. This is because if you open the lid, the oil will oxidize and deteriorate. Keeping it well is not enough for the next maintenance.

You also need to buy new engine oil. You should save all 7 maintenance engine oils before using it for one service, and anyone who maintains a car should have had this experience. Every time you change the oil, there is always a little bit of oil that doesn't run out.

Can I use the remaining oil next time? How can I get it, and the unused oil can be used until the next oil change. So even after opening, the water content of the high-quality oil is intact.

Not exceeded. If the water content is exceeded, the effect of the oil will gradually weaken.

Especially when exposed to sunlight, the deterioration rate of the oil will be accelerated, and it is for this reason that the oil after opening cannot be stored for a long time. How can we save oil so that it does not deteriorate? with plastic wrap.

Cover the entire bottle and screw on the cap and you're good to go. Because if you do this, the air will not enter the disease, and no oxidation will occur.

I'll use it next time. But make sure that the oil is the same each time. The other models of the brand should not be mixed as much as possible, which is suitable for owners who go to the 4S shop for repair or fixed in the workshop.

Very few people actually take the remaining oil. Generally, after the maintenance is completed, drive away directly, and leave the remaining oil and old things at the repair station.

Shelf life. The problem does need to pay attention to the fact that the shelf life of unopened engine oil is relatively long, but the shelf life after opening depends on the preservation method and good storage, the deterioration of engine oil is mainly due to the lack of strict sealing, and some chemical components in the engine oil react with the water in the air, which eventually leads to the deterioration and failure of the engine oil. Therefore, the preservation of the remaining oil is key.

First close the cap with plastic wrap and then open the cap, no problem, it's simple. It is very troublesome to take away most of the engine oil, and it is necessary to put it in the trunk to take up space, mainly because it takes a long time to collect the flow that can be sorted out once, and it will expire when you have saved enough, so many people think so.

When you use it in a cool and dry place, it is best to return to the car and not keep it in the trunk, because it takes a long time to keep it, so when the oil in the trunk shakes, it can continue to shake and speed up deterioration. Even if there are liters left for each maintenance, it will take 8 times to collect 4 liters. The car is rarely driven, the maintenance is infrequently, and it takes several years to save 4 liters.

Therefore, there is also a skill in using the remaining oil. The second maintenance can first add the remaining oil in the first maintenance, and then add new oil, and the remaining oil is new, and so on next time, avoid leaving new oil in each maintenance. Prevents excessive storage time and greatly reduces the risk of oil deterioration.

When the water content is exceeded, the oil is completely useless. Motor oil contains a lot of antioxidants.

and detergents, which are very stable and easily react with oxygen in the air.

If it is sealed and left for a short time, then of course it can be used next time, but if it has been stored for a long time and it is not well preserved, then it is better not to use it again.

It's completely okay, take it away and save it for the next time, but to ensure that the oil used each time is the same, try not to mix different brands and models of oil, and it is suitable for car owners who have been going to 4S shops for maintenance or maintenance locations fixed.

Of course, you can, but you have to seal it, otherwise the dust will fall in, and it will be bad, and you can continue to use it.

<> "Can you save the remaining engine oil for next time?"

The shelf life of engine oil is very long, and generally unopened can be stored for 4-5 years. But every time we finish maintenance, the little oil left over is very awkward. If you lose it, you will be reluctant to do so, but the oil has been opened, can you save it for the next time?

Yes, but it can only be left for one year, and the oil will inevitably come into contact with the air after opening. The moisture contained in the air will continue to interact with the oil, causing the oil to emulsify into an emulsion, and the oil will gradually lose its lubrication effect, which will aggravate wear and even block the pipeline. At the same time, the sulfur and chloride ions in the water and engine oil react to produce sulfuric acid and hydrochloric acid, which can also cause corrosion damage to the metal parts inside the car.

Therefore, it is better to use the engine oil as soon as possible after opening.

How do you store the rest of the oil? Although it is a one-year shelf life, how to store it determines the specific length of this shelf life. First of all, the unsealed engine oil should be stored in a dry environment with a suitable temperature of 0-29, generally speaking, the oxidation rate of the oil will double for every 10 years of temperature increase.

Also, keep the oil bottle out of direct sunlight and don't carry it in the car.

The remaining oil can be used for the next service. Engine oil is something that every car owner comes into contact with when they are using their car. Engine oil is known as the blood of the engine. If there is no oil in the engine, the engine will not function properly.

The role of oil: engine oil has the functions of lubrication and wear reduction, auxiliary cooling, sealing and leakage, rust and corrosion, shock absorption and buffering. It is called the "blood" of the car. Choosing the right oil and changing it regularly can keep your engine in good condition and extend its lifespan.

Oil selection before sail:

The choice of engine oil is not the most expensive, the most correct thing to do is to choose the right oil according to the characteristics of the car engine and the usual driving habits. It can be classified according to the oil used in winter and the oil used in summer. The oil suitable for use in winter mainly depends on the low temperature viscosity grade, and the summer temperature is high, so there is no need to choose an oil with a good low temperature viscosity grade.

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The remaining engine oil can be kept for the next time, but it needs to be sealed, seal the bottle mouth with plastic wrap and tighten the cap, and store it in a relatively cool and dry place to avoid the oxidation reaction of the engine oil due to sunlight.

In addition, it is necessary to pay attention to the shelf life of engine oil, generally the shelf life of unopened engine oil is about 5 years, and the shelf life of engine oil after opening will be greatly shortened, generally only 1 year. After opening, the oil is easy to absorb the moisture in the air, thereby accelerating the oxidation and deterioration of the oil, the water content of the normal engine oil is below, when the water content is exceeded, the additives in the oil will fail and cause the oil to deteriorate.

Of course, the right seal and protection from light can effectively extend the shelf life of the oil after opening. If the oil deteriorates once it expires, it cannot be used in the car. However, even if the oil is expired, it can also be used again, the expired oil still has a certain lubricating effect, when the mechanical parts of the bicycle, motorcycle or other machines are rusty and stuck, you can wipe some oil, which can play a good role in lubrication, so as to reuse effective resources and avoid waste.

Photo by Pacific Automobile Network Zeng Caihong).

After carrying out oil maintenance, there will always be leftovers, so what can you do with the remaining engine oil? In fact, it can be stored for the next use, but it must be well sealed, seal the cork with plastic film, twist the cork, and store it in a cooler and dry area to prevent the oil from being exposed to sunlight and causing redox reactions.

In addition, it is necessary to pay attention to the shelf life of the engine oil, generally the shelf life of unopened engine oil is about 5 years, and the shelf life of the engine oil after opening will be greatly shortened, generally only 1 year of storage. After opening the engine oil, it is very easy to absorb the water in the air, and then accelerate the oxidation and deterioration of the oil air, the water content of the normal engine oil is as follows, when the water content is exceeded, the additives in the oil will be invalid and cause the oil to deteriorate.

Naturally, proper sealing and shading can effectively increase the storage time of the oil after opening. If the oil deteriorates at the expiration date, it cannot be used in the car continuously. However, even if the oil expires, it can also be carried out again to turn waste into treasure, the expired oil still has a certain smooth practical effect, when the mechanical parts of the bicycle, motorcycle or other equipment are rusted and stuck, you can wipe some oil, which can play a good smooth effect, which ensures the re-use of reasonable resources and prevents consumption.