What is API SJ engine oil?

What are the reasons for insensitive brakes?

Brake insensitivity can be caused by: 1. Excessive free travel of the brake pedal; 2. Insufficient or no oil in the brake master cylinder reservoir; 3. Deteriorated brake fluid (thinned or thickened) or excessive buildup of deposits on the inner walls of the pipelines; 4. Air entering the brake pipelines or vaporization of brake fluid causing air resistance. The brake is a mechanical braking device that can slow down the speed of the vehicle, also known as a decelerator. The car brake pedal is located below the steering wheel. Pressing the brake pedal causes the brake lever linkage to be pressurized and transmitted to the brake shoes on the brake drum, clamping the brake disc to slow down or stop the vehicle. The manual brake of the car is located next to the gear shift, connected to the brake lever.

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What is the difference between 19-inch tires and 18-inch tires?

18-inch and 19-inch tires have similar tire widths, and the rolling radius error is less than 0.4%, which means they should have almost the same footprint. The specific differences are as follows: 1. From the perspective of braking performance: There is almost no difference in dry braking performance between 18-inch and 19-inch tires, and the dry handling performance of 19-inch tires is faster. However, in terms of wet braking performance, 18-inch tires perform the best. Cornering hydroplaning is also best with 18-inch tires. So, based on current objective data, there is almost no substantial difference between these two tire sizes. 2. From the perspective of subjective handling: During dry handling tests, the subjective feel of the tires shortens as the size increases. The fastest lap times with 19-inch tires are not because the larger wheel size provides more grip, but because these tires offer sharper and more responsive steering, while 18-inch tires make the car feel softer and more vague. 19-inch tires give the driver confidence and stability. 3. From the perspective of comfort and noise: 18-inch tires transmit more road bumps to the driver, especially at the rear of the car. The noise level of 18-inch tires is acceptable, but it can still be felt inside the cabin. With 19-inch tires, the car's comfort deteriorates significantly, and the ride becomes much less comfortable.

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Why was the Toyota Cup cancelled?

Toyota Cup was cancelled for several reasons: The naming rights being solely Toyota made it too commercialized; FIFA wanted to attract more sponsors, but with only two teams participating, its influence and scale were too limited. Here is additional information: 1. Full name of Toyota Cup: The Toyota European-South American Club Football Cup, also known as the Intercontinental Cup, was an annual match between the winners of the European Champions Cup and the Copa Libertadores. 2. Home-and-away format: Initially, the Intercontinental Cup consisted of two matches played on a home-and-away basis. Before 1968, the winner was determined by points, and if the points were tied, an additional playoff match would be held.

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What is the normal tire pressure for 19-inch tires?

The tire pressure for passenger cars is not related to the size of the tires used. Generally, the standard tire pressure for passenger car tires is 2.3-2.5 bar. Below is information about the relationship between tire pressure and vehicle performance: 1. Relationship between tire pressure and load capacity: Tire pressure is an indicator of a vehicle's load capacity. The load capacity of a vehicle depends on the tire pressure. According to the relationship between the tire's load index, tire pressure, and load capacity, higher tire pressure results in greater load capacity, while lower pressure reduces load capacity. For example, a tire with a load index of 80 has a load capacity of 300 kg at 0.15 MPa, but this increases to 450 kg at 0.25 MPa. This shows that tire pressure significantly affects a vehicle's load capacity. 2. Relationship between tire pressure and vehicle dynamics: When a car drives at a constant speed on a level road, it must overcome rolling resistance from the ground and air resistance. Tire pressure greatly influences the rolling resistance coefficient. When tire pressure decreases, the rolling resistance coefficient increases rapidly because lower pressure causes greater tire deformation and higher hysteresis loss. Therefore, appropriate tire pressure ensures good vehicle dynamics.

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What is Steering Wheel Play?

Steering wheel play refers to the free movement (also known as free rotation angle or travel) of a car's steering wheel. It is the angle the steering wheel can turn without causing any deflection in the steering wheels. This play is the cumulative result of the combined clearances in the entire steering system and the steering wheels. Below is more information about the steering wheel angle sensor (which is essentially the steering wheel play sensor): 1. Steering Wheel Angle Sensor: A component of the vehicle stability control system, primarily installed in the steering column below the steering wheel. It is generally connected to the PCM via the CAN bus and can be categorized into analog and digital steering wheel angle sensors. 2. Three-Gear Mechanical Structure: Commonly used steering wheel angle sensors employ a three-gear mechanical structure to measure the rotation angle and the number of turns. The large gear rotates with the steering column, while the two smaller gears, differing by one tooth, are fixed to the sensor housing and the vehicle body, remaining stationary as the steering wheel turns.

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What is the maintenance schedule for Audi A6?

Audi A6 requires an engine oil change when the mileage reaches 15,000 kilometers, and a brake fluid replacement when exceeding 30,000 kilometers. Regular vehicle maintenance refers to preventive work involving inspection, cleaning, lubrication, adjustment, or replacement of relevant components, primarily covering engine systems, transmission systems, cooling systems, etc., to eliminate potential safety hazards. Below are key points about car maintenance: 1. First Maintenance: Some manufacturers specify timing based on time or mileage. Exact first maintenance intervals should follow the vehicle's user manual or warranty booklet. The initial service is crucial and free, so ensure it's not missed to avoid affecting subsequent warranty coverage. 2. Maintenance Items: Core procedures include replacing engine oil, oil filters, transmission fluid, spark plugs, cabin air filters, engine air filters, and brake fluid. However, not all items require replacement during every service – this depends on their service life. Maintenance also involves inspecting and servicing dozens of components across multiple systems: engine, transmission, air conditioning, steering, braking, suspension, bodywork, and tires.

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What is API SJ engine oil?

What are the reasons for insensitive brakes?

What is the difference between 19-inch tires and 18-inch tires?

Why was the Toyota Cup cancelled?

What is the normal tire pressure for 19-inch tires?

What is Steering Wheel Play?

What is the maintenance schedule for Audi A6?

What is the reason why the Audi A6 car lock cannot be opened from the outside?

Is Engine Internal Cleaning Fluid Useful?

What is the Function of Engine Protectant?

Can the vehicle annual inspection be delayed for a few days?