How to Bleed the Brakes of a Geely Emgrand EC7?

What is the Difference Between DOT4 and DOT3 Brake Fluid?

DOT4 performs better than DOT3, mainly in terms of high-temperature performance. The equilibrium reflux boiling point of DOT4 is 230°C, while that of DOT3 is 205°C. Vehicles using DOT4 brake fluid can brake more frequently. Additionally, their compositions differ, as detailed below: DOT3 is typically glycol-ether-based. The chemical components of glycol-ether brake fluid are polyglycol or propylene glycol. Polyglycol or propylene glycol has strong hygroscopicity, so its water content gradually increases during use or storage. Since the boiling point of brake fluid decreases as water content rises, its braking performance declines accordingly. If you find that you need to press the brake pedal harder to stop, a likely reason is that the brake fluid has excessive water content. Brake fluid should generally be replaced every two years. DOT4 is typically ester-based. Ester-based brake fluid is made by adding a large amount of borate ester to the glycol-ether base. Borate ester is formed through the esterification reaction of polyglycol or propylene glycol with boric acid. Borate ester has a higher boiling point than polyglycol or propylene glycol, resulting in better braking performance. Borate ester also has strong moisture resistance, as it can decompose absorbed water, thereby slowing the decline in boiling point caused by water absorption. Therefore, ester-based brake fluid performs better than glycol-ether-based brake fluid but is also more expensive. According to GB12981-2003 "Motor Vehicle Brake Fluid," brake fluids are classified into HZY3, HZY4, and HZY5, corresponding to DOT3, DOT4, and DOT5 internationally. Precautions for Using Automotive Brake Fluid: If gasoline, diesel, or engine oil is accidentally mixed into a synthetic brake fluid system, the incompatibility between fluids can reduce braking effectiveness. For vehicles driven normally for 40,000 kilometers or with brake fluid used continuously for over two years, the brake fluid may degrade due to prolonged use, so timely replacement is essential. For vehicles equipped with a brake fluid level warning device, always monitor whether the warning light is flashing and whether the sensor is functioning properly. When brake fluid is low, it should be replenished promptly. Stored brake fluid should be kept between the marked minimum and maximum capacity levels. If braking becomes inconsistent during normal driving, the brake fluid should be replaced immediately. Before replacement, clean the braking system with alcohol. If the vehicle pulls to one side during braking, conduct a comprehensive inspection of the braking system. If the wheel cylinder rubber cup is excessively swollen, it may indicate poor-quality brake fluid. In this case, replace it with high-quality brake fluid and change the rubber cup simultaneously. During seasonal changes, especially in winter, if braking performance declines, the brake fluid grade may not suit winter conditions. When replacing brake fluid, choose one with lower viscosity at low temperatures. Do not mix different types or brands of brake fluid. For braking systems with special requirements, use a specific brand of brake fluid. Since different brands and types of brake fluid have varying formulations, mixing them can degrade performance. Even brands labeled as compatible or interchangeable may not perform satisfactorily, so avoid long-term mixed use. If water contaminates the brake fluid or if impurities or sediment are found, replace or thoroughly filter the fluid immediately. Otherwise, it may lead to insufficient braking pressure and reduced effectiveness. Regularly replace brake fluid: The volume of brake fluid changes with temperature, so the reservoir has a vent hole. Air drawn in through this hole may contain moisture or impurities, which can be absorbed or dissolved by the brake fluid, lowering its boiling point. During prolonged braking, the braking system heats up, increasing the risk of vapor lock. Compressed air can reduce braking force or cause failure. For safety, brake fluid must be replaced periodically.

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What is Caboodun Wheel Hub?

Caboodun Wheel Hub is a well-known brand in the modification of automotive parts, offering a variety of sizes from 17 to 22 inches, multiple bolt patterns such as 5X114.3, 5X112, 5X120, and various J-values like 17X7.5j, 18X8j, enabling owners of various brand models to select the most suitable wheel hub for their vehicles. Introduction to Caboodun: Since its inception, Caboodun Automotive Parts has gathered excellent talents with rich experience in automotive parts R&D within the industry. These experts analyze the materials and craftsmanship of various models from brands such as Porsche, Land Rover, Audi, and Japanese brands, as well as components like wheel hubs and calipers. They select premium materials like aerospace-grade aluminum alloy and employ processes such as electroplating, forging, and low-pressure precision casting to create high-quality wheel hubs featuring multiple sizes, bolt patterns, and offsets. Advantages of Caboodun: Low density and lightweight design ensure effortless wheel rotation, while durability and superior load-bearing capacity prevent deformation even when driving on bumpy roads with gravel or speed bumps.

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Can You Drive with 40 Bar Tire Pressure?

Tire pressure of 40 bar is unsafe for driving. Vehicles should not be driven if the tire pressure is below 1.0 bar. Most modern vehicles are equipped with a tire pressure monitoring system (TPMS), which typically triggers an alert when the tire pressure drops below 1.5 bar. Hazards of excessive tire pressure: Reduced tire friction and adhesion, affecting braking performance; Causes steering wheel vibration and deviation, lowering driving comfort; Accelerates uneven wear on the central tread pattern, shortening tire lifespan; Increases vehicle vibration, indirectly affecting the lifespan of other components; Overextends the tire cords, reducing elasticity and increasing the load on the vehicle during driving; Decreases puncture resistance. Sharp objects like nails or glass can easily penetrate the tire, leading to internal cracks or blowouts. Solutions for insufficient tire pressure: If no damage is visible, simply inflate to the normal pressure and reset the TPMS; If a puncture is detected, drive to a tire shop for repair and reinflation; If the low-pressure warning reappears after inflation without a puncture, it may indicate a leak due to wheel rim deformation. Inspect and replace the rim if necessary.

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How often should the coolant in a Prado be replaced?

Prado requires coolant replacement every 2 years. While coolant allows for evaporation loss, any deficiencies observed during usage should be replenished with additional coolant. The coolant replacement procedure is as follows: Before performing a complete coolant change, conduct a thorough inspection to check for any leaks or cracks in the piping system, with particular attention to the five-way hose. This hose derives its name from having five connection points that distribute coolant to different vehicle components. If any coolant leakage is detected in this section, replace the hose or resecure the connections as needed. Drain the old coolant, then flush the fluid channels with clean water. Fill the coolant reservoir with water and continuously circulate it through the engine cooling system. Start the engine and let it idle for 3 to 5 minutes to facilitate water circulation. Initially, the discharged water may appear slightly pinkish - continue flushing until the outflow runs clear. Remember to disconnect the heater hose to completely drain the heater core. Approximately one hour after draining, pour new coolant into the radiator hose to enable rapid filling of the radiator. Then add another container of coolant to the reservoir until nearly full. Run the engine for about 10 minutes - as air pockets are purged from the system, the fluid level will drop. Top up the coolant to the "MAXT" mark on the reservoir.

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What is the 'Big Donkey' car?

The 'Big Donkey' is originally known as the Chevrolet Blazer. Product Introduction: Since 1935, when it inaugurated the SUV era with the Suburban-Carryall, Chevrolet has been committed to creating authentic SUV products, continuously advancing technology and accumulating technological expertise. Over 84 years, it has launched a series of classic and popular models beloved by SUV enthusiasts. The story of the Blazer began in 1969, when it pioneered the four-wheel-drive SUV, establishing Chevrolet's SUV image as 'bold and practical' with its powerful performance and adaptability to various road conditions. Over the next 50 years, it delivered exhilarating driving pleasure to more than 3.4 million global owners. Exterior Design: The Chevrolet Blazer features a nearly 5-meter-long body, with a design inspired by the leading concept SUV FNR-CarryAll, offering high recognition and impact. The front face is robust and powerful, featuring a split-type design for the headlights, with LED headlights as standard across all models. The rear taillights adopt a dual-Y-shaped LED design, ensuring driving safety during both day and night, further enhancing travel quality. The dual-pane electric panoramic sunroof covers an area of over 1 square meter. The rear end features dual exhaust pipes, exuding the boldness typical of American SUVs. Additionally, the Chevrolet Blazer is available in two versions: the RS series and the stylish Redline edition.

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At what traffic light can you make a U-turn at an intersection?

Making a U-turn at an intersection is not restricted by traffic lights. At intersections without signs or markings prohibiting U-turns (or left turns), you can legally make a U-turn regardless of whether the light is red or green. However, if there is a clear sign at the intersection with instructions such as "When the left-turn light is green" or "When the red light is on," you must follow the signal timing specified on the sign to make a U-turn. The following situations prohibit U-turns: U-turns are prohibited where there is a "No U-turn" sign or a "No left turn" sign: If there is a sign prohibiting U-turns, then U-turns are not allowed at that intersection. The action of making a U-turn is an extension of a left turn, so if there is a sign prohibiting left turns at an intersection, U-turns are also prohibited there. U-turns are prohibited at crosswalks: U-turns are not allowed at crosswalks. If you are at an intersection where U-turns are permitted, you must cross the crosswalk before making a U-turn; you cannot make a U-turn on the crosswalk. U-turns are prohibited when there is no left-turn lane: Even if you are in the leftmost lane, if there is no sign permitting left turns, U-turns are not allowed. U-turns are prohibited within the second left-turn lane: When a vehicle is in the second left-turn lane, it cannot make a U-turn. In the absence of any guiding signs, vehicles can only make U-turns in the innermost left-turn lane.

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How to Bleed the Brakes of a Geely Emgrand EC7?

What is the Difference Between DOT4 and DOT3 Brake Fluid?

What is Caboodun Wheel Hub?

Can You Drive with 40 Bar Tire Pressure?

How often should the coolant in a Prado be replaced?

What is the 'Big Donkey' car?

At what traffic light can you make a U-turn at an intersection?

What to Do When the Car Won't Start After Sitting for a Day?

Why Are Fuel Tanks on Low-End Cars Located on the Left Side?

What is the transmission model of the 2021 TAYRON?

Why Does an Automatic Transmission Car Experience Jerking When Accelerating?