What is the normal tire pressure range for the Buick Excelle?

Should the Volkswagen Santana use 92 or 95 octane gasoline?

According to the official car manual recommendation, the Volkswagen Santana should use 92 octane gasoline. In addition to checking the suitable gasoline grade in the car manual, the Volkswagen Santana can also check it on the fuel tank cap, which will also be marked. Usually, the gasoline grade can also be determined based on the engine compression ratio. Cars with an engine compression ratio between 8.6-9.9 should choose 92 octane gasoline, while those with a compression ratio between 10.0-11.5 should choose 95 octane gasoline. However, with the use of some new technologies nowadays, the gasoline grade cannot be solely determined by the compression ratio. A high compression ratio can also be adjusted to use lower-grade gasoline. This is because, apart from the compression ratio, there are other influencing factors such as ignition timing, turbocharging technology, and Atkinson cycle technology. Generally, the higher the gasoline grade, the higher the octane number and the better the anti-knock performance. 92 octane gasoline contains 92% isooctane and 8% n-heptane, while 95 octane gasoline contains 95% isooctane and 5% n-heptane. If the Volkswagen Santana occasionally uses the wrong gasoline grade, simply switch back to the correct gasoline grade after use. However, if the wrong gasoline grade is used for a long time, the following effects may occur: For vehicles recommended to use lower-grade gasoline, using higher-grade gasoline by mistake will not cause damage, but the increase in octane number will change the fuel's ignition point, leading to delayed combustion in the engine. This means the engine's power output and thermal efficiency will decrease, and the actual feedback experience is reduced power. For vehicles recommended to use higher-grade gasoline, using lower-grade gasoline will cause engine knocking. Because the octane number is too low, the fuel's ignition point decreases and may ignite prematurely during the compression stroke. If combustion occurs before the spark plug ignites during the compression stroke, resistance will appear during the upward stroke. This resistance will make the engine run very unstably. If it is only slight knocking, the noise will increase, but the damage to the engine is not obvious. If there is obvious knocking, it indicates that the engine's condition is already very severe. The vibration not only affects driving stability but also causes abnormal wear of the piston and cylinder, and in severe cases, cylinder scoring may occur.

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How to Turn on the Air Conditioning After the Car Has Been Exposed to the Sun?

After the car has been exposed to the sun, it is necessary to fully open the windows or doors to allow the harmful gases inside the car to completely dissipate, creating a relatively normal environment inside the vehicle. Only when the interior temperature has dropped is the best time to turn on the air recirculation mode. Here is some additional information: 1. External Circulation: In this mode, the fan draws air from outside the car into the interior, meaning there is a flow of air between the outside and inside of the car. The air blown by the fan comes from outside, and even if the fan is not turned on, air will still be drawn into the car while driving, replenishing the fresh air inside. Sometimes, you may feel air coming in even when the fan is off—this is because the external circulation mode is set. 2. Internal Circulation: In this mode, the airflow passage between the inside and outside of the car is closed. Without the fan, there is no airflow circulation, and when the fan is turned on, the air drawn in comes only from inside the car, creating an internal airflow cycle. The internal circulation mode is mainly used to effectively and promptly block external dust and harmful gases from entering the car, such as when driving through areas with smoke, dust, strong odors, or when driving in heavy traffic where harmful exhaust fumes from the car in front need to be blocked.

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How to Use the Windshield Washer?

The windshield washer control is usually located next to the steering wheel, and activating it typically involves lifting the wiper lever upward. Here are the details: 1. Function: Windshield washer fluid is a common automotive product that every car owner will encounter during vehicle use. The washer fluid needs to be added to the washer fluid reservoir, which is located in the engine compartment. Windshield washer fluid has cleaning and antifreeze functions, helping to remove dirt and dust from the windshield, thereby ensuring clear driving visibility. 2. Antifreeze: The antifreeze feature prevents the washer fluid from freezing during winter use. If the washer fluid freezes, it may damage the reservoir or the piping system. When liquids freeze, their volume expands, which can easily lead to reservoir damage. Some low-quality washer fluids lack antifreeze properties, so it's important to choose a product with a sufficiently low freezing point for winter use.

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Who to Call for a Flat Tire on the Road?

If you have a flat tire on the road, you can call 12122 for roadside assistance. Below are the specific reasons for tire damage or blowouts: 1. Traumatic Cracking: This type of cracking generally occurs without a set pattern in terms of location, shape, or size, caused by collisions, compressions, or scraping against foreign objects while driving. Some cracks only affect the rubber surface, while others may damage the tire's body cords. Severe cases can lead to instant tire deflation. If the cracks are minor and only on the rubber surface, they do not affect the tire's safety and can continue to be used. However, if the cracks extend to the body cords or even damage them, this poses a safety hazard and requires immediate replacement. 2. Aging Cracks: These cracks usually appear in the later stages of tire usage, commonly found on the tire shoulders or lower sidewalls, and sometimes at the bottom of tread grooves. This is a natural change in tire rubber due to long-term flexing and heat generation. Prolonged driving with low tire pressure can accelerate this process, but it generally does not affect the tire's lifespan or safety performance, and early replacement is usually unnecessary.

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How to Use the Brake Pedal After Driving Through Water

After driving through water, you should intermittently and gently press the brake pedal. Here is relevant information: 1. Reason: After driving through water, the presence of water between the brake pads and discs (or drums) reduces braking performance. Intermittent braking generates heat to evaporate the moisture, thereby restoring normal braking function. 2. Waterlogged sections: When passing through waterlogged areas, you should avoid stopping or shifting gears as much as possible. Maintain steady throttle input without lifting off or accelerating. The correct approach is to keep a low gear with medium-to-high throttle and pass through at a constant speed. If the vehicle stalls while driving, shift to neutral.

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Where is the Buick automatic mirror folding switch located?

The mirror folding switch is generally located on the door side of the driver's seat, featuring a small icon resembling a side mirror. Pressing it once will automatically fold the mirrors. To unfold them, simply press the switch again. The mirror folding function refers to the ability of both side mirrors to fold inward when necessary, which can be either manual or electric. The correct usage of mirrors is as follows: Start with both sides, adjusting the left mirror until you can see the car body in the reflection, then proceed with fine-tuning. The car body should occupy no more than 1/4 of the mirror's view. Next, adjust the horizontal position so that the distant horizon is centered vertically in the mirror. Then, adjust the interior mirror to compensate for the right-side blind spot, ensuring you can see the right rear window. Maintain your usual sitting posture and check if the rear window is centered in the mirror, following the same 'horizon guideline' as with the side mirrors. During vehicle use, minor collisions are inevitable. The side mirrors, which increase the vehicle's width, are more susceptible to impact. Folding them can minimize such impacts and prevent scratches caused by the mirrors. Cars equipped with folding mirrors can retract them when passing through narrow sections, improving the vehicle's maneuverability. When parked, folding the mirrors protects the mirror surfaces, reduces parking space requirements, effectively avoids scrapes, and prevents pedestrians from accidentally hitting the mirrors, thus preventing damage. Mirrors are relatively fragile external components. If damaged, they can affect driving safety, and replacement costs are relatively high.

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What is the normal tire pressure range for the Buick Excelle?

Should the Volkswagen Santana use 92 or 95 octane gasoline?

How to Turn on the Air Conditioning After the Car Has Been Exposed to the Sun?

How to Use the Windshield Washer?

Who to Call for a Flat Tire on the Road?

How to Use the Brake Pedal After Driving Through Water

Where is the Buick automatic mirror folding switch located?

What is the fuel tank capacity of the Emgrand GL in liters?

How to Fold the Side Mirrors on the Volkswagen Viloran?

What are the three functions of a transmission?

Is Dayang a Domestic or Joint Venture Brand?