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What to Pay Attention to When Changing Engine Oil and Oil Filter

2 Answers

Sadie

07/24/25 10:56am

Here are the precautions for changing the oil filter: 1. After the engine has been running, the exhaust pipe will also be very hot, so be careful when working around the exhaust pipe. Be cautious when loosening the oil drain bolt while the engine is hot, as the oil temperature is high to avoid burns. 2. Properly dispose of waste oil and old filters. Waste oil, which is highly toxic, must never be disposed of with household waste, and draining it into the sewer is also illegal. 3. Oil filters come in various types, but only high-quality filters can ensure maintenance quality, so premium genuine oil filters must be used. Using oil filters that do not meet specifications can cause engine oil leaks and contamination. A special reminder: before installing a new oil filter, the rubber gasket on the cylinder block must be replaced.

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Ramona

08/11/25 5:57am

As a DIY car enthusiast with years of experience, I believe the most important aspects when changing engine oil and the oil filter are selecting the right tools and following safety procedures. First, park the car on a level surface and securely lift it with a reliable jack or ramps—preventing side slippage is crucial. Choose the oil viscosity as specified in the manual (e.g., 5W-30; don’t randomly use other grades). For the filter, opt for OEM parts or certified compatible products—don’t cheap out to avoid leaks. Wait at least an hour for the engine to cool before starting. Wear thick gloves when loosening the drain plug and use a large oil pan to catch the old oil to prevent spills. Before installing the new filter, apply a bit of fresh oil on the rubber gasket for better lubrication and sealing. When adding new oil, avoid overfilling—keep it between the low and mid marks on the dipstick. I always check the oil level and potential leaks after driving a few hundred kilometers post-change to ensure smooth engine operation and longevity. DIY saves time and money; tools like wrenches and an oil pan are a one-time investment for long-term use. But take it step by step—safety first.

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Does the car radiator need cleaning?

Car radiators do need cleaning. Here are the relevant steps: 1. Ensure the engine is cool and turned off. 2. Open the drain plug at the bottom of the radiator to let the coolant flow into a bucket. The coolant should be properly disposed of to avoid environmental harm. 3. Close the drain plug and fill the radiator with water. 4. Start the engine, turn on the heater control system (this will open the heater control valve), add cooling system cleaner, and let the engine idle for 30 minutes (or follow the instructions on the cleaner bottle). 5. Turn off the engine and let it cool for 5 minutes. Drain the liquid from the radiator. 6. Close the drain plug, fill the radiator with water, and let the engine idle for 5 minutes. Then refill with a 50/50 mixture of water and ethylene glycol antifreeze/coolant (use the same type of coolant previously used in the car).

How to Check the Manufacturing Date of a Tire?

On one side of the tire, there is usually a DOT marking. The tire manufacturing date code format is as follows: the first two digits indicate the production week, and the last two digits indicate the production year. Below is related information about the functions of tires: 1. Support the entire weight of the vehicle, bear the load of the car, and transmit forces and moments in other directions. 2. Transmit traction and braking torque to ensure good adhesion between the wheel and the road surface, improving the car's power, braking, and passability; work together with the car suspension to mitigate impacts during driving and dampen resulting vibrations. 3. Prevent severe vibrations and early damage to car components, adapt to the vehicle's high-speed performance, reduce driving noise, and ensure driving safety, handling stability, comfort, and energy efficiency.

How to Solve the Problem of Vehicle Pulling to One Side?

If a large vehicle is pulling to one side, it is necessary to measure the toe-in, correct the camber angle, inspect the kingpin, and perform tire rotation to resolve the issue; if a small car is pulling to one side, generally performing a four-wheel dynamic balance can solve the problem. Below are the relevant details: 1. Vehicle pulling refers to the phenomenon where a car, while driving straight on a flat road, automatically veers to one side, causing the line connecting the centers of the front and rear axles to not align with the centerline of the driving trajectory. 2. In mild cases, pulling can cause tire wear and tire scrapping, while in severe cases, it can lead to dangerous situations such as tire blowouts and loss of vehicle control. 3. There are many reasons for vehicle pulling, and generally, the following faults can cause it: unequal tire pressure on both sides, incomplete separation of the front brake, and failure of the front spring.

Should the Car Air Conditioner Use Internal or External Circulation in Summer?

First turn on the external circulation or open the windows for ventilation, then switch to internal circulation. Here are the relevant details: 1. In the hot summer, many car owners habitually turn on the internal circulation of the air conditioner as soon as they get into the car, thinking that this will cool down the cabin temperature faster. 2. External circulation actually sends air from outside the vehicle into the cabin through the air filter element and blower, while internal circulation simply blocks the external air intake flap. 3. Whether it's internal or external circulation, exhaust gases inside the car will be expelled through the vents, so even with internal circulation on, there's no need to worry about the oxygen levels in the cabin air. Additionally, when the outside air quality is poor, it's necessary to turn off the external circulation and promptly use internal circulation to prevent harmful gases from entering the cabin. When internal circulation is on, one should not assume the car is airtight. Although internal circulation prevents outside air from entering the cabin, exhaust gases inside the vehicle will still be expelled through the vents.

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What Should Be Noted When Waxing a Car Body?

When waxing a car body, the following points should be noted: 1. Do not wax a new car casually. Some people wax their new cars immediately after purchase, which is not advisable. The paint layer of a new car already has a protective wax coating, and waxing too early will remove the original wax on the surface, causing unnecessary waste. Generally, there is no need to rush to wax a new car within five months of purchase. 2. Master the frequency of waxing. Depending on the driving environment and parking location, the interval between waxing sessions should vary. For vehicles parked in garages and mostly driven on good roads, waxing every 3-4 months is sufficient. For vehicles parked outdoors and exposed to wind and rain, it is best to wax every 2-3 months. 3. Before waxing, it is best to wash the car body with water to remove dirt and dust. Avoid using dish soap or soapy water indiscriminately, as the sodium chloride content in them can corrode the car's paint layer, wax film, and rubber parts, causing the paint to lose its shine and the rubber parts to age. If no dedicated car wash solution is available, clean the car with plain water and dry it thoroughly before applying wax.

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