What are the symptoms that indicate the need for an oil change?

3 Answers
OscarLee
07/28/25 3:39pm
Symptoms indicating the need for an oil change: The engine noise of the car will increase, which is caused by the thinning of the engine oil. Additionally, the engine oil pressure warning light may illuminate, as the thinning of the engine oil results in excessively low oil pressure. Engine oil, also known as engine lubricant, serves multiple functions including lubrication and wear reduction, auxiliary cooling, sealing and leak prevention, rust and corrosion protection, as well as shock absorption. Engine oil consists of two main components: base oil and additives. The base oil is the primary constituent of the lubricant, determining its fundamental properties, while additives compensate for and enhance the shortcomings of the base oil, providing new characteristics and playing a crucial role in the lubricant's performance.
Was this review help?
3
0
Share
OViolet
08/11/25 7:59pm
Oh, when it comes to symptoms that indicate the need for an oil change, I've encountered quite a few situations over my years of driving. The most common one is when the engine oil turns black or becomes as murky as muddy water—normally, it should be a clear, light brown color. If you open the cap and smell a burnt or pungent odor, that's bad news—it means the oil has deteriorated. When the engine makes louder noises upon startup, almost like it's grinding its teeth, that indicates insufficient lubrication, and components may be severely worn. Another sign is increased oil consumption—if you constantly need to top it up, it's clearly burning oil. If the oil pressure light on the dashboard comes on, get it checked immediately—don't wait for a breakdown on the road. Even a sluggish feeling while driving or slow throttle response can be a warning sign. Personally, I make it a habit to pull out the dipstick and check every 5,000 kilometers. Regular oil changes save money and keep you safe—delaying is never worth it. If the oil fails, engine repairs can be insanely expensive—don't cut corners to save hassle.
Was this review help?
20
5
Share
Expand All
Harriet
09/29/25 5:41am
When I first got my new car, I didn't understand much about engine oil. Later, I gradually noticed more and more symptoms. The engine made a loud buzzing noise like a tractor when starting, which really startled me. The oil on the dipstick was as black as ink, while it should normally be yellowish—dirty oil needs to be changed. The car felt sluggish when driving, with slow acceleration and a noticeable lack of power. After opening the engine cover, I found the oil level had dropped significantly, requiring frequent top-ups. The oil warning light on the dashboard came on, clearly indicating it was time for a change. There was also a sudden increase in fuel consumption—more gas used for the same distance—a sign of deteriorating oil performance. Now, I've learned to check the dipstick every three months—it's quick and easy. Regular checks save money; otherwise, engine failure on the road could cost more in towing fees than several oil changes. Remember not to exceed the mileage, and stick to the maintenance schedule in the manual—it's crucial.
Was this review help?
6
0
Share
Expand All
More Forum Discussions

What is the solution for the Audi parking brake warning light being on?

Audi parking brake warning light being on can be solved by: 1. Check if the handbrake lever is fully released. If not, the handbrake switch underneath may remain in the on position, or the handbrake may not be pressed to the switch position; 2. Check if there is a lack of brake fluid, and replenish it promptly if necessary; 3. Use a computer diagnostic tool at a 4S shop to detect the issue, perform repairs based on the fault code, and then reset the warning light. Taking the 2020 Audi A6 as an example, it belongs to the mid-to-large-sized car category, with body dimensions of: length 5038mm, width 1886mm, height 1475mm, wheelbase 3024mm, fuel tank capacity 73l, and curb weight 1800kg.
8
3
Share

What are the causes of anti-lock braking system failure?

Anti-lock braking system failure is caused by: 1. Severe wear of brake pads; 2. Low brake fluid level. The functions of the anti-lock braking system are: 1. To prevent vehicle loss of control, increase braking distance, and improve vehicle safety; 2. To enhance the overall braking performance of the vehicle; 3. To prevent wheel lock-up during braking; 4. To ensure the driver can control the direction during braking and prevent rear axle skidding. The working principle of the anti-lock braking system is: During emergency braking, highly sensitive wheel speed sensors installed on each wheel detect wheel lock-up. The computer immediately controls the pressure regulator to release pressure from the wheel's brake caliper, allowing the wheel to resume rotation, thereby preventing wheel lock-up.
5
1
Share

How to Avoid Crossing the Line During Parallel Parking?

Before starting parallel parking, position your vehicle correctly, maintaining a distance of 30-50 centimeters between the right side of the car and the curb. Throughout the process, it's crucial to keep the speed slow and avoid stalling the engine. You'll need to constantly check different reference points in the mirrors while coordinating hand movements. Synchronization between hands and feet is essential.
15
5
Share

What is DSG?

DSG is not a car, but Volkswagen's dual-clutch transmission. Transmissions are divided into: 1. Hydraulic automatic transmission; 2. Mechanical continuously variable automatic transmission; 3. Electronically controlled mechanical automatic transmission. The transmission consists of a transmission mechanism and a transmission control mechanism. The function of the transmission mechanism is to change the value and direction of torque and speed; the function of the control mechanism is to control the transmission mechanism, realize the transformation of the transmission ratio, achieve gear shifting, and achieve speed and torque variation. The working principle of the transmission is to make different gear pairs work inside the transmission through the control mechanism. At low speeds, gear pairs with a large transmission ratio work, while at high speeds, gear pairs with a small transmission ratio work.
5
0
Share

How to Deal with Scratched Side Skirts?

For minor scratches, prevention is key. Protect the paint surface when it is still new, such as by applying a mirror glaze to the body surface. Use a polishing wheel with a polishing enhancer to remove the oxidation layer attached to the car's surface and smooth out fine scratches. This process takes only 30 to 40 minutes. If the scratches on the body have exposed the primer, local touch-up painting is required.
14
3
Share

How long after passing Subject 2 can I schedule Subject 3? How many training hours are required?

You can basically schedule Subject 3 after completing Subject 2. Taking C1/C2 driver's license as an example, scheduling Subject 3 requires completing 22 training hours. Typically, Subject 3 training hours begin after passing Subject 2. According to regulations, a maximum of 4 training hours can be logged per day, so the fastest completion would take one week. According to the rules, the earliest you can schedule Subject 3 is 7 days after passing Subject 2. Additional information regarding Subject 3 and retests is as follows: Requirements for scheduling Subject 3: For first-time applicants of a motor vehicle driver's license or those applying to add a permitted vehicle type, applicants scheduling Subject 3 must meet the following requirements: For low-speed trucks, three-wheeled vehicles, wheeled self-propelled machinery, trolleybuses, or tram permitted vehicle types, the test can be scheduled 20 days after obtaining the driving skill test permit; for small cars, small automatic transmission cars, or small automatic transmission cars for the disabled permitted vehicle types, the test can be scheduled 30 days after obtaining the driving skill test permit; for large buses, tractors, city buses, medium buses, or large trucks permitted vehicle types, the test can be scheduled 40 days after obtaining the driving skill test permit. Retest requirements: Each subject test can be taken once, and those who fail can retake it once. If the retest is not taken or is failed again, the current test session ends, and the applicant must schedule the test again. However, Subject 2 and Subject 3 tests can only be scheduled 10 days later. If the Subject 3 safe and civilized driving knowledge test is failed, the passed road driving skill test scores remain valid.
6
4
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.