Is the vv5 a domestic or joint-venture car?

What to Do If 95 Octane Is Mixed with 92 Octane?

Occasionally mixing 95 octane gasoline with 92 octane is not a problem. Here are the relevant details: 1. Long-term use of lower octane gasoline in high-octane vehicles can severely affect engine performance, leading to knocking and potentially reducing engine lifespan while increasing maintenance costs. 2. The fundamental difference between 95 octane and 92 octane gasoline lies in their octane ratings, essentially meaning they contain different proportions of anti-knock additives. 95 octane gasoline has a slightly higher proportion of anti-knock additives compared to 92 octane. The quality of both fuels is identical, with no difference in cleanliness or other factors; the only variation is the amount of anti-knock additives, designed to meet the different anti-knock requirements of engines with varying compression ratios.

2

3

Share

What are the methods for testing automotive engine power?

There are two main methods for testing automotive engine power: 1. Steady-state power testing (load testing or external load testing): Steady-state power testing refers to a method of measuring engine power on a dynamometer when the throttle opening, engine speed, and other parameters remain constant in a stable state. 2. Dynamic power testing (no-load testing or external load-free testing): Dynamic power testing refers to a method of measuring engine power when parameters such as throttle opening and engine speed are in a changing state. According to the power testing principle, dynamic power testing can be divided into two categories: (1) Measuring instantaneous power by determining instantaneous angular acceleration, which is an instrument solution that obtains instantaneous power by measuring the acceleration at a certain speed during the acceleration process. (2) Measuring average power by determining acceleration time, which is a solution that obtains average acceleration power by measuring the acceleration time within a certain speed range during the acceleration process.

5

3

Share

Can Hu C license plates use the Outer Ring Tunnel?

Hu C license plates cannot use the Outer Ring Tunnel. Here is the relevant information: "Hu C" license plate four-wheel motor vehicles are prohibited from driving on the Middle Ring Road (from Yanggao South Road Overpass to Huaxia Elevated Road), Huaxia Elevated Road, and the roads within the following areas, so they cannot use the Outer Ring. The prohibited areas for motor vehicles with "Hu C" license plates (excluding two-wheel motorcycles and light motorcycles) are as follows: Taihe Road (from the Huangpu River westward)-Taihe West Road-Gutai Road-Guchen Road-Hutai Road-Tangqi Road-Qilianshan Road-Hujia Expressway-Outer Ring West Second Avenue-Outer Ring West Avenue-Outer Ring South Avenue-Yanggao Road Interchange-Yanggao South Road-Longyang Road Interchange-Longyang Road-Longdong Avenue-Zhangjin Road-Jinqiao Interchange-Yanggao North Road to the Yangtze River, within the scope of the Outer Ring Road (including the above roads), "Hu C" license plate motor vehicles are prohibited from entering at all times.

9

5

Share

How to Reset the Trip Mileage?

Methods to reset the vehicle's trip mileage are as follows: 1. Press and hold the small protruding button on the dashboard to reset the meter to zero. 2. Remove the dashboard, take off the upper cover of the instrument panel, remove the pointers for speed, fuel gauge, water temperature, and RPM, then use a flat-head screwdriver to adjust the mileage gear to reset it. Below are some related introductions: 1. The "trip" on a car refers to the sub-total mileage, measured in kilometers, used to calculate the distance between two locations. 2. Vehicle mileage can be divided into: sub-total mileage (trip) and total mileage (odometer). The sub-total mileage is marked as "trip," while the total mileage is marked as "odometer." These two data points are also indicators to evaluate whether a car is new.

11

1

Share

Why Does a Turbocharged Car Lack Power?

Turbocharger power deficiency occurs because turbocharged engines using low-quality oil do not necessarily require full synthetic oil, but it is recommended to use full synthetic oil. Full synthetic oil can achieve relatively high shear resistance with relatively low viscosity. As is well known, low oil viscosity means less resistance and faster flow, which is crucial for efficient heat dissipation required by the high temperatures of turbochargers. The low viscosity of full synthetic oil enhances the oil's heat dissipation efficiency, which is significant for turbochargers. When the engine is cold, aggressive throttle use with poor-quality air filters can cause issues. Many people prefer to clean air filters with high-pressure air and continue using them. This is highly incorrect. After being blown by high-pressure air, the pores in the air filter expand, potentially allowing large dust or sand particles to pass through. This is akin to a bird striking a high-speed rotating turbine in an aircraft, leading to turbine blade damage, imbalance, eccentric wear, and further deterioration. When using low-quality oil filters for prolonged aggressive driving, it is necessary to delay shutting off the engine. Note that "aggressive driving" here refers not to long-distance driving but to extreme speeds, excessive acceleration, or mountain road driving, which can cause turbocharger temperatures to rise excessively. Although modern engines have independent electronic delayed cooling programs that continue heat dissipation after the engine is turned off, if the battery dies, the cooling cycle terminates. This can prevent the turbocharger from reducing its high temperatures, leading to oil carbonization due to extreme heat and causing turbocharger burn-out. Many low-quality filters have small filtration areas. Over time, accumulated impurities severely reduce circulation. In such cases, the oil filter's bypass valve opens, rendering the filter ineffective and allowing large amounts of impurities to enter the engine's circulation. These impurities can clog the turbocharger's oil passages, impairing circulation and causing wear to the floating bearings. During prolonged aggressive driving, delaying engine shutdown is necessary. Again, "aggressive driving" refers to extreme speeds, excessive acceleration, or mountain road driving, not long-distance highway cruising at 120 km/h, which does not overheat the turbocharger.

3

0

Share

What Lights Should Be Turned On When Driving in the Rain?

When driving in the rain, the appropriate lights to use depend on the intensity of the rainfall. The following are three specific scenarios: 1. For light rain, use the width indicator lights: At the beginning of rainfall, the sky is relatively dark, but visibility is still acceptable. In this case, the width indicator lights should be used. 2. For heavy rain, turn on the headlights or front fog lights: When the rain is heavier, the rainwater itself obstructs visibility, and water on the road surface splashed by the tires of the vehicle ahead can create a mist, significantly affecting visibility. In such conditions, the headlights or front fog lights should be turned on. 3. For torrential rain, the rear fog lights can be activated: The rear fog lights should only be used during very heavy rain because the red tail lights of a car already have strong penetrating power, and ordinary heavy rain cannot block their light. The rear fog lights are extremely bright and are designed to penetrate thick fog.

13

4

Share

Is the vv5 a domestic or joint-venture car?

What to Do If 95 Octane Is Mixed with 92 Octane?

What are the methods for testing automotive engine power?

Can Hu C license plates use the Outer Ring Tunnel?

How to Reset the Trip Mileage?

Why Does a Turbocharged Car Lack Power?

What Lights Should Be Turned On When Driving in the Rain?

How many hours of practice are required for Subject 3 before taking the test?

What are the benefits of cleaning the engine?

How to Identify China 5 and China 6 Vehicle Emission Standards?

How to Deal with Strong Odor in a New Car?