What do I need to pay attention to when changing the engine oil by myself?

1. When should I change the oil?

In the general driving situation of a new car, if synthetic engine oil is used, the oil can basically be changed every 10,000 kilometers, and some can even be dragged up to 20,000 kilometers. According to auto repair professionals, "general driving" refers to driving on the highway a lot and rarely stopping and walking. But if you often drive in the city, there are traffic lights when you go to **, you will be stuck in traffic at every turn, and most of the distances of each trip are not more than ten kilometers, this kind of driving method belongs to "attritional driving".

Second, how to choose engine oil.

Choosing a good engine oil can make your car more durable and powerful. A good engine oil, especially a fully synthetic one, can not only protect the engine and reduce the number of oil changes, but also save on gasoline costs. Therefore, it** is twice as expensive as regular oil, making it the best choice for many car owners.

3. The amount of oil should be slightly lower than the scale on the oil dipstick, and it should not be overfilled.

Engine oil is extremely important for the movement of the engine, as it is responsible for lubrication and heat dissipation. Therefore, at any time, there should never be a shortage of oil for the engine. But adding too much (exceeding the upper limit of the ruler) has bad consequences.

Too much oil will increase the rotational resistance of the crankshaft, reduce the output power of the engine, and the excess oil will enter the combustion chamber to participate in combustion, causing the vehicle to burn oil, blue smoke, and increase fuel consumption. Residues from combustion oil (which is mainly made of carbon and are very hard) accumulate on the combustion chamber walls, reducing the combustion chamber space, thereby reducing the compression ratio of the engine, while also accelerating the wear of cylinders and pistons, thus reducing the life of the vehicle.

Fourth, do not mix old and new engine oil or different engine oils.

Old and new engine oil should not be mixed. When the new oil is mixed with the old oil, the oxidation and deterioration rate of the new oil will increase, thereby reducing the use effect and service time of the new oil. According to the test, when the old engine oil of the diesel engine is scrapped, if all the new oil is added at one time, the service life of the oil can reach 1500 hours.

If half of the new oil is mixed with half of the old oil, the oil will only last 200 hours, and the service life will be much reduced.

Step 1: Turn off the car after driving onto the lift, then use the lift to jack the vehicle, pull up the handbrake and squeeze the front wheels up with a wooden wedge.

Check the drain bolts, reinstall the drain bolts, and be careful not to overtighten the bolts to prevent damage to the oil pan.

Step 3: Move the oil container under the oil filter, use the oil filter wrench to loosen the filter, and then unscrew it by hand. If the filter is still hot, remember to wear gloves.

Even if the filter element was tightened before, there is no need to worry about damaging the filter element during the removal process, as long as it does not damage the connection screws that install the filter element and the parts around the filter element, after all, we no longer use the removed filter element.

Step 4: Refer to the user manual to select the appropriate oil filter.

Step 5: Apply the interface gasket of the new filter cartridge with new oil. If the filter is installed vertically, you can pour some new oil into the filter, which will reduce dry grinding the next engine start.

Screw the filter in by hand and tighten the filter as indicated (usually after tightening the filter by hand and then screwing it in 3 or 4 turns).

Step 6: Pour the new oil into the oil pan, taking care to refer to the user's manual. A funnel can be used to prevent oil from being poured on the outside of the engine.

Check the lower part of the engine for leaks. If there is no leak, put down the vehicle, check the dipstick, and start the engine, the indicator light on the gauge should turn off immediately after starting. Finally, turn off the engine and double-check the oil level and dispose of the old oil and filters according to local regulations.

<> "Number One, Types of Motor Oil. After buying a car, many friends will know how much gasoline their car is filled with, but they don't care about the engine oil at all. When we go for maintenance, the maintenance staff will ask us to add a relatively high specification of engine oil, and he will tell you that the oil you added before is not good, which will damage the car.

But in fact, this is a marketing routine of his, just to get you to buy its more expensive products. Therefore, we must understand the type of oil in our car and don't get marketed at that time.

The second point is that every time we change the engine oil, the correct approach should be to make the remaining oil clear, which is to avoid the precipitation of the oil, which will cause damage to the interior of the car, which generally does not appear, but with the accumulation of time, the impact will be caused by blind search of acres, and water droplets through stones are a good example.

The first leak is like three points, the maintenance cycle. Now when we are maintaining the car, the staff told us that the next time it is less than 5,000 kilometers, we will need to come to the maintenance of Mosen, and we will be obedient. But here it is recommended that you take 7000 km as a reference value, although the cars have certain differences, but now the quality of the engine oil on the market is relatively good, so 7000 km is no big problem, but it still depends on the actual situation.

1. Choose the right oil.

When choosing the right engine oil, you need to choose the oil grade in strict accordance with the instruction manual, if there is no same grade of engine oil, you can only use a higher grade of engine oil, and never use a lower grade of engine oil instead. At the same time, it is necessary to pay attention to whether the viscosity of the engine oil meets the requirements, and do not have the idea of choosing the expensive one.

2. Oil discharge and inspection.

After the technician twists the oil pan screws or twists the oil filter to release the waste oil, it is necessary to pay attention to: match the oil pan screws with a new screw washer and then tighten it; Before installing the new oil filter, it is necessary to carefully check whether the rubber sealing ring of the original old filter is removed with the filter, so as to avoid oil leakage when the new part is installed. In addition, the new oil filter rubber seal (the rounded edge of the filter) is applied by hand with an oil film that acts as a lubricating medium during installation and prevents the seal from rubbing and breaking when the new filter is installed.

If you find that your technician has missed the above steps, you should know what to do.

3. Add an appropriate amount of engine oil.

When adding engine oil to your car, you need to add engine oil appropriately according to the displacement of the vehicle, and you must not be greedy to add too much, or add too little in order to save money. If there is too much oil, it will cause internal power loss when the engine is started, and it will cause problems with burning oil. On the other hand, if the engine oil is insufficient, the internal bearings and journals of the engine will rub due to insufficient lubrication, which will aggravate the degree of wear, and in severe cases, it will cause the accident of burning the shaft.

Therefore, when adding engine oil, it should be controlled between the upper and lower engraved lines of the oil dipstick.

Fourth, check again after the oil change.

When the oil is added, it is necessary to start the car, let the engine run for 3 to 5 minutes, and then turn off the engine. Re-draw the dipstick to check the oil level, and raise the vehicle to check the position of the oil pan screw or oil filter for organic oil leakage. Calculate the correct steps to change the oil.

If the engine is in good condition and the temperature is low in season, use oil with low viscosity as much as possible to keep the oil path unblocked. For example, in the high temperature season or under the condition of severe engine wear, the selection of high viscosity oil is conducive to the formation of oil film and reduces engine wear. Engine repair agent is a kind of car maintenance product that repairs the most advanced motivation problems.

Transmission fluid, brake fluid, northern also pay attention to antifreeze, brake pads, tires, oil, etc.

1. Shell 2, Mobil 3, Castrol 4, Jiamei 5, Zhongneng Hi-Tech 6, Total 7, Coside 8, FOSS 9, Kunlun 10, Great Wall. The role of oil is 1. Lubrication and wear reduction: between the piston and the cylinder, between the spindle and the bearing, there is a rapid relative sliding, and to prevent the parts from wearing too quickly, it is necessary to establish an oil film between the two sliding surfaces.

An oil film of sufficient thickness separates the surface of the relatively sliding part to reduce wear. 2. Cooling and cooling: The oil can bring the heat back to the oil tank and then dissipate it into the air to help the water tank cool the engine.

3. Cleaning and cleaning: good engine oil can bring carbide, sludge and wear metal particles on the engine parts back to the oil tank through circulation, and wash the dirt generated on the working surface of the parts through the flow of lubricating oil. 4. Leak-proof sealing

The oil creates a seal between the piston ring and the piston to reduce gas leakage and prevent outside contaminants from entering. 5. Anti-rust and anti-corrosion: lubricating oil can be absorbed on the surface of parts to prevent water, air, acidic substances and harmful gases from contacting parts.

6. Shock absorption and buffering: when the pressure of the engine cylinder port rises sharply, the load on the piston, piston chips, connecting rod and crankshaft bearing is suddenly aggravated, and the load is transmitted and lubricated by the bearing, so that the impact load bears plays a buffering role.