Why is there no sound when playing music via Bluetooth in Baojun cars?

Are Scratch Repair Magic Tools Reliable?

After testing, it was found that the so-called scratch repair magic tools can only handle minor paint surface scratches, and their effectiveness is barely satisfactory. When facing more severe scratches or scratches that expose the primer, the repair effect is basically zero, and it is difficult to restore the original gloss and brightness. Below is the relevant introduction: Toothpaste Repair: Apart from scratch repair magic tools, there are also rumors online that toothpaste can repair scratches. After experiments, it was found that toothpaste does have the effect of removing minor paint surface scratches, but one cannot expect toothpaste to achieve the same effect as spray painting. Toothpaste can help eliminate minor scratches to some extent because it contains abrasives in its ingredients, which give toothpaste a function similar to car wax, reducing the appearance of scratches. Professional Beauty Repair: If you encounter paint surface scratches, it is best to choose a professional beauty shop for repair, as most car owners are not professionals. While DIY repair is commendable, it is difficult to achieve perfect results.

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Is Battery Repair Fluid Really Effective?

Battery repair fluids available on the market are indeed an effective repair method, capable of effectively restoring battery capacity. After one complete charge-discharge cycle, the range can increase by 5-15 kilometers. After seven complete charge-discharge cycles, the battery capacity can be restored to over 90%, extending its service life by about one year. Here are other methods: Hydration Therapy: The concentration of the battery's electrolyte is a crucial factor. When the concentration is abnormal, sulfation may occur. The battery can be discharged and then charged with a current below the 20-hour rate. After completing the charge, the sulfation phenomenon can be eliminated, and the capacity can be restored to over 80%. Shallow Cycle High-Current Charging Method: After the battery has been used for a period, sulfide salts naturally accumulate on the plates and need to be removed promptly. Use a high current within the 5-hour rate to fully charge the battery. Discharge 30% of the capacity while keeping the electrolyte temperature below 40 degrees Celsius. Repeating this process three to four times can repair the sulfation phenomenon in car batteries.

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Is Thinner or Thicker Engine Oil Better?

Neither excessively thick nor overly thin engine oil is ideal. The concentration of engine oil is related to its viscosity—higher concentration means greater viscosity, while thinner concentration indicates lower viscosity. There’s a saying in selecting engine oil: choosing the right viscosity is best. Below are the relevant details: Overly thick oil: Using engine oil that is too thick, meaning oil with excessively high viscosity, will increase engine operating resistance, raise fuel consumption, and may even cause certain wear because the high viscosity prevents rapid lubrication of the friction surfaces of engine components. Overly thin oil: Using engine oil that is too thin generally leads to louder engine noise, reduced sealing performance, and a higher likelihood of oil burning. Similarly, overly thin oil cannot form an adequate oil film, resulting in friction and wear on component surfaces.

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How far can you actually drive with a 500 km range?

A 500 km range can actually drive within 400 km. Below is an introduction to energy-saving techniques for electric vehicles. Maintain a steady speed at medium to low levels: A medium to low speed is approximately 1/4 to 1/3 of the maximum speed, roughly 40-60 kilometers per hour, which corresponds to most urban commuting conditions. This is because this speed range aligns with the motor's optimal efficiency range, where the current is not too high, yet it doesn't compromise commuting efficiency. When the speed meets the requirement, controlling the throttle to maintain a steady speed allows the battery to discharge evenly, keeping it close to the ideal range. Avoid sudden acceleration and deceleration: Gentle acceleration and preemptive deceleration are the most fuel-efficient driving methods. This is because they make full use of the engine's output energy without wasting it on braking. The same applies to electric vehicles—the motor is most energy-efficient when output power is constant. Sudden acceleration can cause an instantaneous surge in current, leading to unnecessary waste. Additionally, most modern electric vehicles come with energy recovery systems. Preemptive deceleration maximizes the use of energy recovery for braking, avoiding energy loss from braking. Furthermore, when descending long or steep slopes, the energy recovery can be set to maximum.

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Is Water or Antifreeze Better for Car Radiators?

Adding antifreeze to a car radiator is more effective than using water because antifreeze offers excellent performance in preventing freezing in winter, boiling in summer, and providing year-round protection against scale and corrosion. Composition of Antifreeze: The main components of antifreeze are: 50% purified water, 40% methanol, and 10% other substances. Types of Antifreeze: Antifreeze is generally categorized into three types: ethanol-water type, glycerol-water type, and ethylene glycol-water type. Can Different Antifreezes Be Mixed? It is necessary to use the same brand of antifreeze. Different brands may have varying production formulas, and mixing them could lead to chemical reactions between additives, rendering them ineffective. How to Choose Antifreeze: The basic indicators of antifreeze are its freezing point and boiling point. Market options include antifreeze with freezing points of -15°C, -25°C, -30°C, and -40°C. Generally, it is advisable to choose an antifreeze with a freezing point at least 10°C lower than the lowest temperature in your region.

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Is the Ignition Booster Useful?

Ignition boosters are not useful; they cannot optimize the ignition timing of spark plugs nor make the spark plugs produce bright, strong sparks to enhance power. Below is the relevant introduction: The role of the ignition coil: As the core component in the engine's ignition system, the ignition coil primarily serves to intermittently convert the vehicle's low-voltage electricity into high-voltage electricity. The importance of the ignition coil: Once the ignition system lacks the high-voltage electricity converted by the ignition coil, the combustible gas mixture in the cylinder cannot be effectively ignited, and thus the engine cannot function properly. This demonstrates the importance of the ignition coil to the engine. Of course, over prolonged use, the ignition coil will inevitably be affected by aging and performance degradation.

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Why is there no sound when playing music via Bluetooth in Baojun cars?

Are Scratch Repair Magic Tools Reliable?

Is Battery Repair Fluid Really Effective?

Is Thinner or Thicker Engine Oil Better?

How far can you actually drive with a 500 km range?

Is Water or Antifreeze Better for Car Radiators?

Is the Ignition Booster Useful?

Which is More Fuel-Efficient: Manual or Automatic Transmission?

Which is Better: Foot Brake or Electronic Parking Brake?

Where to Add Windshield Washer Fluid for Cars?

Can the battery be repaired?