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When Should Engine Oil Be Replaced?

2 Answers
BarrettFitz
07/29/25 3:20am
Engine oil should be replaced under the following circumstances: 1. Check the oil viscosity; if there is no viscosity, the oil needs to be replaced; 2. The oil color turns black; 3. Excessive black particles, metal shavings, or carbon deposits in the oil; 4. The oil smells abnormal. The functions of engine oil include: lubrication and anti-wear, auxiliary cooling, cleaning, sealing and leak prevention, rust and corrosion prevention, and shock absorption. Engine oil is categorized into: 1. Conventional mineral oil; 2. Semi-synthetic oil; 3. Full synthetic oil. The method for replacing engine oil is as follows: 1. Lift the vehicle, remove the underbody shield, and place a container under the oil drain plug; 2. Unscrew the oil drain plug, use an air gun to blow into the oil filler port for two minutes, then tighten the oil drain plug after draining and wipe it with a tissue to check for leaks; 3. Reinstall the underbody shield, lower the vehicle, and add new oil through the oil filler port.
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LeBrooke
08/12/25 7:11am
I think oil change intervals depend on your driving habits. If you mainly drive short city commutes daily, the oil gets dirty faster and should be changed earlier—around every 5,000 km or 6 months. When I do more highway driving, synthetic oil can last 7,500 to 10,000 km, but you should regularly check the oil color—replace it if it turns black or sticky. Make it a habit to check the dipstick after parking; low oil levels or metal particles mean trouble. The maintenance manual is your bible—follow it religiously, don’t wait until the engine makes strange noises to regret it. Overall, flexibly adjust based on mileage and time to keep the engine running smoothly.
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What Causes the Abnormal Noise When Turning the Steering Wheel While Stationary in a New Car?

New cars producing abnormal noises when turning the steering wheel while stationary can be attributed to sounds from the shock absorber top bearing, the stabilizer bar, the steering column dust cover, or interference from the clock spring. Noise from the shock absorber top bearing: If a noise occurs when gently shaking the steering wheel while stationary, it is likely due to insufficient lubrication in the shock absorber's top bearing. To confirm, open the hood and listen if the sound originates from the shock absorber's top mount. Applying grease to the top bearing may resolve the issue; if the noise persists, replacement is necessary. Noise from the stabilizer bar: If the noise is not from the shock absorber, check the stabilizer bar bushings for looseness or damage. Loose or damaged stabilizer bar bushings can cause noises not only when turning the steering wheel but also when driving on uneven roads. Loose bushings can be fixed by adding shims, while damaged ones require replacement. Noise from the steering column dust cover: Inspect the steering column dust cover. A lack of lubrication in the dust cover can cause dry friction noises. Applying grease inside the dust cover should eliminate the noise. Noise from clock spring interference: If the noise comes from within the steering wheel while turning, it may be due to interference from the clock spring. Remove the steering wheel and apply grease to the clock spring. If the noise continues, replacing the clock spring is the only solution.
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What are the insurance company's standards for headlight replacement?

Headlights can only be replaced if the mounting tabs are broken or if the lens housing is damaged. Additional details are as follows: 1. Overview: Vehicle insurance, also known as auto insurance or motor insurance, refers to a type of commercial insurance that covers liability for personal injury or property damage caused by natural disasters or accidents involving motor vehicles. 2. Other Information: Auto insurance is a category of property insurance. Within the property insurance sector, auto insurance is a relatively young line of coverage. In its early stages, auto insurance primarily focused on third-party liability coverage and gradually expanded to include risks such as collision damage to the vehicle body.
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Which gear should the Geely Vision X3 automatic transmission use for climbing slopes?

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Can the leather under the car window be repaired?

The leather under the car window can be repaired, and the repair method varies depending on the extent of the leather damage. If it is just a small crack, you can use leather repair fluid to fix it. Lay the leather flat on a workbench, align the crack, apply the appropriate leather repair fluid, and then dry it with a hair dryer. If the crack is large, take a piece of leather or non-woven fabric that matches the softness of the damaged leather for repair. Lay the leather flat on a workbench, cut a piece of leather or non-woven fabric larger than the crack, place it under the damaged area, and bond it with leather adhesive. Finally, cover it with a piece of cotton cloth and use an iron to set it. Methods for maintaining car interior leather: Use car leather maintenance oil. Car leather maintenance oil has penetrating and moisturizing effects, providing deep and long-lasting protection for genuine leather. It keeps leather products soft and maintains their natural color, effectively preventing aging, cracking, and discoloration. It is also waterproof, mold-proof, and enhances the gloss of car leather. The application method is simple: spray or apply the maintenance oil evenly on the leather with a cotton cloth, then polish it with a white cloth. Use seat covers. Seat covers can protect car leather. As long as the seat covers are well-maintained, the car leather will not suffer significant damage. However, car owners should still regularly maintain the interior leather, clean the seat cushions, and remove surface dirt from the leather interior.
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What number should I call if my car is blocked?

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What do Mercedes-Benz S, E, and C stand for?

Mercedes-Benz's S-Class, E-Class, and C-Class are used to differentiate their levels and orientations. The S-Class focuses on luxury, the E-Class on comfort, and the C-Class on sportiness. The differences among them are as follows: 1. Different positioning: The E-Class is considered a mid-to-high-level car in the Mercedes-Benz lineup, the S-Class is the top-tier luxury car, while the C-Class is a compact sedan. The S-Class emphasizes luxury, the E-Class focuses on comfort, and the C-Class highlights sportiness. 2. Different appearances: The E-Class has softer side lines with a cigar-shaped waistline; the S-Class features triangular headlights, giving it the most aggressive look, with more inclined rear lines, the longest body length, and the highest height; the C-Class has the smoothest lines and the most sporty feel, appearing sharper and more suitable for younger people.
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