Is SP grade engine oil definitely better than SN?

What does excessive HC in vehicle exhaust mean?

Excessive HC (Hydrocarbon) in vehicle exhaust indicates incomplete combustion of gasoline, which may be caused by poor atomization or, in severe cases, issues with the oxygen sensor or the failure of the three-way catalytic converter in the emission system. The reasons for excessive HC include the following: Incomplete engine combustion: Many factors related to engine combustion can contribute, such as the cleanliness of the fuel, the atomization condition of the fuel injector, fuel pressure, engine compression ratio, cylinder wall quenching effect, faults in the ignition system (including spark plugs, ignition wires, and high-voltage coils), and reduced cylinder pressure due to cylinder wear. Decreased purification capability: Faults in the intake system, such as an overly rich air-fuel mixture, can also lead to excessive HC. The fuel evaporation system and the crankcase ventilation system play crucial roles in controlling HC levels.

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What are the available sizes for grille lights?

Conventional aluminum grilles (with visible light surfaces when viewed from below) have standard widths of 10mm or 15mm, with height options of 20mm, 40mm, 60mm, and 80mm. The grid sizes for aluminum grilles include 50X50mm, 75X75mm, 100X100mm, 125X125mm, 150X150mm, and 200X200mm. Additional information: Aluminum grilles are one of the ceiling materials produced in recent years. They offer an open view, ventilation, and breathability, with clean and orderly lines and distinct layers, embodying a simple and modern style. Easy to install and remove, they have become a major product in the decoration market in recent years. Aluminum grilles can be mainly categorized into recessed aluminum grilles and flat aluminum grilles.

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What is the Difference Between Full-Time 4WD and On-Demand 4WD?

Here are the differences between full-time 4WD and on-demand 4WD, including structural and operational differences. Below is a detailed introduction to the different distinctions: Structural Differences: On-demand 4WD has a relatively simple structure, while full-time 4WD has a more complex structure. Power Transmission to Front and Rear Axles Differs: On-demand 4WD has a smaller adjustment range, while full-time 4WD has a larger adjustment range. Operational Differences: On-demand 4WD does not have a separate button in the vehicle, whereas full-time 4WD does. Part-time 4WD vehicles are designed with a transfer device, which may be a transfer case lever or an electronic button or knob. Most on-demand 4WD systems have a separate button in the vehicle labeled "lock," while some are automatically engaged without any button in the vehicle.

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After how many kilometers do car brake pads need to be replaced?

Car brake pads need to be replaced after exceeding 80,000 kilometers. To determine the quality of brake pads, the first consideration is the friction coefficient, which determines the basic braking torque of the brake pads. A coefficient that is too high can cause wheel lock-up and loss of directional control during braking, while one that is too low results in excessively long braking distances. The second factor to consider is safety. Brake pads generate instantaneous high temperatures during braking, especially during high-speed driving or emergency braking. Under high temperatures, the friction coefficient of the brake pads may decrease. An efficient and effective braking system must provide stable and controllable braking force, along with excellent hydraulic transmission and heat dissipation capabilities, to ensure that the force applied by the driver on the brake pedal is fully transmitted to the master cylinder and each wheel cylinder, thereby avoiding hydraulic failure and brake fade caused by excessive heat.

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What materials are needed to change the name on the vehicle license between father and son?

Identity proof of the vehicle owner, vehicle registration certificate, vehicle license, purchase invoice (or other proof of origin), and standard photos of the vehicle applying for the transfer. If the above situation requires a change of license plate number, the original vehicle license plate must also be brought along. The vehicle management office will reclaim the original plate and issue a new one. Relevant information about vehicle transfer is as follows: 1. Introduction: Vehicle transfer refers to changing the name of the vehicle's owner. When buying a used car, besides checking the car's condition, the most important step is completing the transfer procedures. 2. Principle: Every vehicle has a fixed household registration, which mainly records the vehicle's owner and address, along with some relevant vehicle parameters. Transferring a vehicle proves that it belongs to the current owner and has no accidents or violations. If the vehicle has issues, such as being involved in an accident, not undergoing annual inspection, being stolen, or being smuggled, it cannot be transferred through normal procedures.

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What are the minimum speed limits for the three lanes on a highway?

When driving on a same-direction three-lane highway, the minimum speed for the leftmost lane is 110 kilometers per hour, the middle lane is 90 kilometers per hour, and the rightmost lane is 60 kilometers per hour. Below is relevant information about highway speed limits: 1. Minimum speed: The minimum speed for normal driving on a highway should not be less than 60 kilometers per hour. For roads with two lanes in the same direction, the minimum speed for the left lane is 100 km/h; for roads with three or more lanes in the same direction, the minimum speed for the leftmost lane is 110 km/h, and the middle lane is 90 km/h. 2. Maximum speed: The maximum speed for small passenger vehicles on highways should not exceed 120 km/h, other motor vehicles should not exceed 100 km/h, and motorcycles should not exceed 80 km/h. If the speed indicated by road speed limit signs differs from the above lane speed regulations, drivers should follow the speed indicated by the road speed limit signs.

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Is SP grade engine oil definitely better than SN?

What does excessive HC in vehicle exhaust mean?

What are the available sizes for grille lights?

What is the Difference Between Full-Time 4WD and On-Demand 4WD?

After how many kilometers do car brake pads need to be replaced?

What materials are needed to change the name on the vehicle license between father and son?

What are the minimum speed limits for the three lanes on a highway?

What are the techniques for driving a manual transmission car in traffic?

Why does the rear wiper keep moving and cannot be turned off?

How to Clear Engine Fault Codes?

How to Check the Tachometer for Manual Transmission Gear Shifting?