What to Do When Feeling Lack of Power After an Oil Change?

3 Answers
LeGia
07/24/25 3:01pm
If you experience a lack of power after changing the engine oil, you can try the following solutions: 1. Replace the oil filter: A faulty or clogged oil filter can cause issues, so it's generally recommended to replace the oil filter along with the new oil. 2. Clean the engine lubrication system during the oil change: If the engine lubrication system hasn't been cleaned for a long time, deposits can accumulate. Changing the oil may dislodge some impurities, suspending them in the oil and clogging the filter, leading to power loss. 3. Pay attention to the oil quantity when adding oil: Adding too much or too little oil can both cause power issues, which should improve after the second oil top-up.
Was this review help?
6
4
Share
DePatrick
08/10/25 7:14am
I just had my engine oil changed last week, but now the car feels sluggish when driving, and pressing the accelerator is like stepping on cotton. I've encountered this situation twice before. The first time was due to overfilling the engine oil, exceeding the upper limit on the dipstick, which increased engine resistance and reduced power. Another time, the mechanic used the wrong oil viscosity—high viscosity oil in winter made cold starts particularly difficult. I suggest you first pull out the dipstick to check the oil level. If it's between the two marks and slightly towards the upper line, it's normal. If the level is too high or the oil is unusually thick, this might be the issue. Also, take a look at the quality of the gasoline you recently filled up with—it might be poor-quality fuel. If the problem persists, take it back to the repair shop for a recheck. Sometimes, missing a gasket during an oil change can also cause issues.
Was this review help?
6
5
Share
Expand All
OPreston
09/25/25 7:10am
It's really frustrating when the car feels weaker after an oil change. Based on my experience, this situation is mostly related to either the quantity or quality of the oil added. A friend of mine once had his car's new oil overfilled, causing the crankshaft to churn the oil and create foam, which actually reduced lubrication effectiveness. Another possibility is that the oil pan drain plug wasn't tightened properly, leading to leaks and insufficient oil pressure. I recommend first checking if any warning lights are illuminated on the dashboard, then inspecting the ground for any oil stains. If you can smell a burnt odor, you should be even more cautious, as it might be oil dripping onto the exhaust pipe during the oil change that's now burning off. Additionally, it's best to supervise the oil change process, as some small shops might use recycled oil passed off as new—such low-quality oil can make the engine run sluggishly.
Was this review help?
1
3
Share
Expand All
More Forum Discussions

How Does an Automotive Turbocharger Work?

Automotive turbocharger works as follows: 1. Principle of turbocharging device: Essentially an air compressor, it increases engine air intake by compressing air. Generally, turbochargers utilize the inertial force of exhaust gases expelled by the engine to drive a turbine in the turbine chamber. The turbine then drives a coaxial impeller, which pressurizes air delivered through the air filter pipeline, forcing it into the cylinders. 2. Increasing output power: As engine speed increases, the exhaust gas expulsion speed and turbine rotation speed also rise synchronously. The impeller compresses more air into the cylinders, and the increased air pressure and density allow for more fuel combustion. By correspondingly increasing fuel supply and adjusting engine speed, the engine's output power can be enhanced. 3. Components of the device: The turbocharging device mainly consists of a turbine chamber and a supercharger. The turbine chamber's intake port connects to the engine exhaust manifold, while the exhaust port links to the exhaust pipe. The supercharger's intake port connects to the air filter pipeline, and its exhaust port joins the intake manifold. Finally, the turbine and impeller are installed in the turbine chamber and supercharger respectively, with both rigidly connected on the same shaft.
16
3
Share

Is Hill Start Included in the Automatic Transmission Driving Test?

Starting from June 1, 2021, the 'Hill Start and Parking' section will be removed from the Subject 2 test for small automatic transmission vehicle driving licenses. Additional details are as follows: 1. Automatic Transmission Subject 2: The test items have been reduced from 5 to 4, which include: reverse parking, parallel parking, 'S' curve, and right-angle turns, making it more aligned with actual driving requirements. 2. Other new regulations: The waiting period for scheduling the Subject 3 test has been shortened from 30 days to 20 days after passing Subject 1. For those upgrading to medium/large bus or truck licenses, the waiting period for Subject 3 has been reduced from 40 days to 30 days after passing Subject 1. The number of times applicants can request to change test locations for small vehicle cross-region subject tests has been increased from 1 to a maximum of 3 times.
4
5
Share

Can an A2 driver's license with 3 points deducted be reviewed online through the Traffic Management 12123 platform?

A2 driver's license with 3 points deducted cannot be reviewed online through the Traffic Management 12123 platform. Below are the relevant details: 1. Annual review at the Vehicle Management Office: After studying on 12123, an A2 driver's license with 3 points deducted still requires an annual review at the Vehicle Management Office. 2. Relevant regulations: According to Article 70 of the "Regulations on the Application and Use of Motor Vehicle Driver's Licenses," motor vehicle drivers must undergo regular reviews at the traffic management departments of public security authorities in accordance with laws and administrative regulations. Motor vehicle drivers must undergo reviews by the traffic management departments of public security authorities when renewing their driver's licenses as stipulated in Articles 57 and 58 of these regulations. Drivers holding licenses for large buses, tractors, city buses, medium-sized buses, or large trucks must undergo reviews at the traffic management departments of public security authorities within 30 days after the end of each scoring cycle.
9
2
Share

What are the effects of water in car carpets on the vehicle?

Water in the carpets does not pose significant harm initially. However, if left uncleaned for a long time, it can cause the sponge beneath the floor mats to rot and emit odors, increase humidity inside the car leading to foggy windows, and in more severe cases, result in electrical short circuits. Therefore, it is essential to promptly identify the source of the water and remove it from the carpets. Handling methods: 1. Cleaning: If the carpet gets wet due to water entering the car and the situation is not severe, remove the soaked carpet and clean up the remaining water inside the car. 2. Draining: There are several rubber seals at the bottom of the vehicle chassis. Open these seals to drain the accumulated water from the cabin. Since the interior materials like floor coverings are highly absorbent, they should be removed and placed in a spacious area to facilitate water evaporation. 3. Drying: After removing the accumulated water, simply open the car windows on sunny days to allow thorough drying. You can also park the car in a sunny spot and leave the doors open for drying.
10
2
Share

What does the Anti-lock Braking System mean?

The Anti-lock Braking System, abbreviated as ABS, is a system that prevents the wheels from locking up during emergency braking by controlling the pressure in the brake lines acting on the wheel brake cylinders. This allows the vehicle to maintain better directional stability during emergency braking. Here are some key points about the ABS: 1. Benefits of ABS: In vehicles without ABS, braking on snowy surfaces can easily cause loss of directional stability. Additionally, the driver must use a hydraulic modulator (also known as an actuator) to stop the vehicle. Conversely, vehicles equipped with ABS can automatically send control commands to the hydraulic modulator, enabling more rapid, precise, and effective braking control. 2. Functions of ABS: The ABS functions by regulating and controlling the pressure in the brake lines to prevent the wheels from locking up and skidding during braking. It maintains the wheels in a state of rolling and sliding with a slip ratio of 15% to 25%, improving the vehicle's lateral stability, directional control, and braking efficiency while reducing localized excessive tire wear.
4
0
Share

Is hitting the line during reverse parking due to turning the steering wheel too early or too late?

If the steering wheel is turned too early, you must wait until the right moment to fully turn it. Methods for reverse parking: 1. Non-linear reverse parking: The vehicle should be perpendicular to the target parking space, using the first parking space as a reference, and you can generally reverse into the third space. This positioning method is more suitable for novice drivers. The advantage is that if done well, it allows for a one-time entry into the space, but the downside is that it's quite mechanical. If there are many vehicles on both sides or the space is narrow, multiple adjustments may be needed. 2. Linear parallel parking: Using the vehicle in front as a reference, if estimated correctly, you can enter the space in one go. This method often requires occupying the lane, so many driving students, who are doing well in the reversing process, may lose their rhythm completely when the car behind honks, leading to failure.
4
5
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.