What are the time limits for each item in Subject 2?

What engine does Oshan Auto use?

Oshan Auto's engines are independently produced by Changan Company, with the production site located in Chongqing, making them domestically manufactured engines. In the Oshan Auto series, the Oshan X7 is equipped with the JL476ZQCF engine model, delivering a maximum power of 131kW, maximum horsepower of 178, and maximum torque of 265Nm. The 1.5T version of the Oshan X5 features the Blue Whale NE1.5T engine, with a maximum power of 132KW, maximum torque of 300Nm, and maximum horsepower of 180. For the daily maintenance of Oshan Auto engines, the following methods can be applied: Use lubricating oil of appropriate quality grade. For gasoline engines, select SD--SF grade gasoline engine oil based on the additional equipment of the intake and exhaust systems and usage conditions; for diesel engines, choose CB--CD grade diesel engine oil according to mechanical load, with the selection standard not lower than the manufacturer's specified requirements. Regularly change the engine oil and filter. The quality of any grade of lubricating oil will change during use. After a certain mileage, performance deteriorates, leading to various engine issues. To prevent faults, change the oil regularly based on usage conditions and maintain an appropriate oil level. When oil passes through the fine pores of the filter, solid particles and viscous substances in the oil accumulate in the filter. If the filter becomes clogged and oil cannot pass through, the filter may burst or the safety valve may open, allowing oil to bypass through the bypass valve and carry contaminants back to the lubrication areas, accelerating engine wear and increasing internal pollution. Regularly clean the crankcase. During engine operation, high-pressure unburned gases, acids, moisture, sulfur, and nitrogen oxides from the combustion chamber enter the crankcase through the gap between the piston rings and cylinder walls, mixing with metal particles from component wear to form sludge. Small amounts remain suspended in the oil, while larger amounts precipitate, clogging filters and oil passages, making engine lubrication difficult and causing wear. Regularly use radiator cleaner to clean the radiator. Removing rust and scale not only ensures the engine operates normally but also extends the overall lifespan of the radiator and engine.

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What does the maintenance light on the new Volvo S90 mean?

Volvo's new S90 maintenance light is on to remind the owner that maintenance is required. The following is a detailed introduction to the Volvo S90: 1. Model positioning: As a minor facelift for the year, the Volvo S90 has added two new sport versions. 2. Configuration: Significant improvements have been made to mid-to-high-end models. Taking the Zhiyuan version as an example, compared to the current model, it adds practical configurations such as a leather-wrapped dashboard, electric adjustment of the front seat cushion length, an enhanced air purification system, electric side window sunshades, a rear windshield sunshade, and an automatic parking system. 3. Powertrain: It continues to use the low/high-power Drive-E series 2.0T turbocharged engine, where T4 corresponds to low power, outputting 139kW (190PS), and T5 corresponds to high power, outputting 186kW (254PS), paired with an Aisin 8-speed automatic transmission.

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What is the passing score for the driving license subject four exam?

Driving license subject four exam requires a score of 90 to pass. Here is some information about the driving license subject four exam: 1. Questions: The subject four exam paper consists of 50 questions, presented in the form of cases, pictures, animations, etc., with a full score of 100 and a passing score of 90. Similar to subject one, a score of 90 or above is required to pass subject four. 2. Exam content: Depending on the type of driving license being tested, 50 questions are randomly selected from the corresponding subject four question bank in proportion. For small vehicle licenses, questions are selected from a pool of 800, while for large vehicle licenses, questions are selected from a pool of 1023, with each question worth 2 points.

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Why doesn't the dash cam have loop recording function?

Check whether the recording lock function is enabled to solve the problem. The following is a detailed introduction to dash cams: 1. Loop recording duration of dash cams: The loop recording settings generally offer different time options such as 1 minute, 2 minutes, 3 minutes, 5 minutes, and 10 minutes. After recording one segment, it automatically moves to the next. 2. Optimal recording time setting for dash cams: Avoid setting the duration too short or too long. If the recording time is too short, the video will be divided into more segments, increasing the chance of frame loss. Conversely, if the duration is too long, fewer videos will be stored and they will be overwritten quickly. It is recommended to set the recording time to 3 or 5 minutes for optimal performance.

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Does a car that hasn't had carbon deposits cleaned for over 100,000 kilometers need cleaning?

A car that hasn't had carbon deposits cleaned for over 100,000 kilometers does need carbon deposit cleaning. The introduction and methods for carbon deposit cleaning are as follows: Introduction to Carbon Deposit Cleaning: It should be decided based on the vehicle's usage. Generally, it is recommended to perform the cleaning every 50,000 kilometers. However, from an economic perspective, if the car is frequently used for long-distance travel, cleaning may not be necessary, and even cleaning once every 100,000 kilometers is acceptable. If the car is often driven in urban areas, it is recommended to clean every 50,000 kilometers. Methods for Cleaning Carbon Deposits: 1. Hydrogen-oxygen decarbonization machine uses atomization to clean both the air intake and the gasoline engine cylinders simultaneously. 2. Drip cleaning or soaking: After removing the spark plugs from each cylinder, pour the cleaning solution into the cylinders and soak until most of the carbon deposits have melted, then extract them using professional tools. 3. Fuel additives are relatively economical and effective, though they cannot completely remove all carbon deposits and may contain corrosive chemicals. 4. If the car has severe carbon deposits, it is recommended to manually disassemble and clean the engine's intake and cylinder head.

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How to Determine if Drum Brakes Need Replacement?

When you feel the brake pedal is too light or braking requires extra effort, it indicates that the brake pads are worn thin and the drum brakes need to be inspected and replaced promptly. Here are specific details about drum brakes: 1. Application of Drum Brakes: Due to their reliability and strong braking force, drum brakes are still equipped on many vehicle models today. They are fixed to the tires and rotate at the same speed. During braking, hydraulic pressure is used to push the brake shoes against the inner edge of the brake drum, generating friction to slow down the rotation of the tires and achieve the braking effect. 2. Principle of Drum Brakes: Drum brakes work by using stationary brake shoes inside the brake drum to rub against the rotating brake drum, creating friction that reduces the speed of the wheel rotation.

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What are the time limits for each item in Subject 2?

What engine does Oshan Auto use?

What does the maintenance light on the new Volvo S90 mean?

What is the passing score for the driving license subject four exam?

Why doesn't the dash cam have loop recording function?

Does a car that hasn't had carbon deposits cleaned for over 100,000 kilometers need cleaning?

How to Determine if Drum Brakes Need Replacement?

What should be paid attention to when washing a new car?

What are the differences between GLC and GLE?

How often should a 7-year-old vehicle undergo annual inspection?

Is there an electronic driving license?