Browse
For Sale
Antiques CollectiblesApparelBaby Kids ItemsBooks， Movies And MusicElectronicsFree StuffGarden OutdoorHealth BeautyHome GoodsHome Improvement SuppliesMusical InstrumentsOffice SuppliesPet SuppliesSporting GoodsTicketToys GamesTransportationOthers
Jobs
AccountingAdministration & Office SupportAdvertising， Arts & MediaBanking & Financial ServicesCall Center & Customer ServiceCEO & General ManagementCommunity Services & DevelopmentConstructionConsulting & StrategyDesign & ArchitectureEducation & TrainingEngineeringFarming， Animals & ConservationGovernment & DefenseHealthcare & MedicalHospitality & TourismHuman Resources & RecruitmentInformation & Communication TechnologyInsuranceLegalManufacturing， Transport & LogisticsMarketing & CommunicationsMining， Resources & EnergyReal Estate & PropertyRetail & Consumer ProductsSalesScience & TechnologySelf EmploymentSport & RecreationTrades & ServicesOther
Property
BuyRent
Cars
Used CarsNew CarsOthers
Services
BusinessCraftsDesign And WebEventsHome ImprovementLegalLessonsPersonalPetsPhotographyRepair And Technical SupportWellnessWriting， Translation， And TranscriptionOthers
Community
Activities & GroupsArtists & MusiciansClasses & LessonsEventsFriendship & NetworkingLost & FoundRideshareSports TeamsVolunteersTravel & Travel PartnersSkills & Language SwapOther

What is the main function of the oil ring?

1 Answers
McColin
07/30/25 5:15am
The main function of the oil ring is to scrape off excess oil from the cylinder wall and spread a uniform oil film on the cylinder wall. This prevents oil from entering the combustion chamber and reduces wear between the piston, piston rings, and cylinder wall. The oil ring is a type of piston ring, which is divided into conventional oil rings and composite oil rings. Piston rings are metal rings fitted into the grooves of a piston. Their clearance function is to accommodate thermal expansion when exposed to high-temperature gases during engine operation and radial expansion/contraction deformation due to periodic reciprocating motion. To ensure normal engine operation, piston rings have clearance within the cylinder.
Was this review help?
18
4
Share
More Forum Discussions

How Long Can You Drive When the Engine Oil Light Comes On?

You should not drive when the engine oil light comes on. The reasons for the engine oil light illuminating are: 1. Insufficient oil level; 2. Clogged oil passages; 3. Low oil viscosity; 4. Oil pump issues; 5. Problems with the oil sensor; 6. Electromagnetic interference. The functions of engine oil include: 1. Lubrication and friction reduction; 2. Assisting in cooling; 3. Sealing and leak prevention; 4. Rust and corrosion protection; 5. Shock absorption. The steps for changing engine oil are: 1. Lift the car, remove the underguard, and place a container of about 10 liters under the drain plug; 2. Unscrew the drain plug, use an air gun to blow into the oil filler port for two minutes, then tighten the drain plug and check for leaks with a paper towel; 3. Reinstall the underguard, lower the car, and use a funnel to add new oil into the filler port.
9
5
Share

What is the procedure for car license plate registration?

Car license plate registration procedure is: 1. Obtain the vehicle certificate; 2. Keep the triplicate purchase invoice; 3. Pay the vehicle purchase tax and receive the original and duplicate tax certificates; 4. Register and inspect the vehicle at the vehicle management office; 5. Select the vehicle license plate number; 6. After payment, receive and install the license plate. The license plate is the numbering of each vehicle, and its main function is to identify the province, city, and county to which the vehicle belongs. The vehicle management office can trace the vehicle owner through the license plate. The license plate refers to the vehicle number plate, which is hung on the front and rear of the vehicle. The materials used are aluminum, iron, plastic, or paper, with the vehicle's registration number, registration area, or other relevant information engraved on it.
9
4
Share

How to Determine if a Car Has Cylinder Scoring?

Methods to determine cylinder scoring in a car include: 1. Reduced cylinder compression pressure and loss of power; 2. Downstream leakage of combustible mixture increases crankcase pressure, which may lead to crankcase explosion in severe cases; 3. Upstream leakage of lubricating oil into the cylinder causing oil burning; 4. Excessive smoke from the exhaust pipe; 5. Abnormal engine noise; 6. Engine malfunction or even stalling. Methods to prevent cylinder scoring include: 1. Adjust the clearance between the piston skirt and cylinder liner, as well as the piston ring end gap; 2. Strengthen the maintenance of the air filter to prevent dust from entering the cylinder; 3. Maintain the lubrication system; 4. Regularly check the engine oil level; 5. Keep the coolant temperature within a reasonable range.
11
5
Share

Is a Fire Extinguisher Mandatory for Cars?

It is not mandatory for cars to have a fire extinguisher, but during the annual vehicle inspection, a fire extinguisher must be placed inside the vehicle; otherwise, the inspection cannot be passed. A fire extinguisher is a portable firefighting device containing chemicals. In case of a fire caused by high temperatures, vehicle malfunctions, or short circuits, using a fire extinguisher can help extinguish the flames, ensuring personal safety and reducing losses. How to use a car fire extinguisher: 1. Pick up the fire extinguisher and position yourself upwind; 2. Turn the fire extinguisher upside down several times to loosen the dry powder inside; 3. Remove the safety pin, hold the handle with your left hand, and grasp the nozzle with your right hand, then turn the fire extinguisher upright; 4. Aim the nozzle at the base of the flames and spray.
20
1
Share

Do I need to be present for the first car maintenance?

It is not necessary for the car owner to be present for the first car maintenance. Car brands usually offer the first maintenance for free. You just need to drive the car and bring the vehicle license, purchase invoice, first free maintenance card, maintenance manual, and driver's license. The vehicle license must be carried, as the staff will establish a vehicle file based on the information in the vehicle license. If you encounter traffic police during the drive, you will also need to provide the vehicle license to avoid unnecessary trouble. The first maintenance refers to the initial service after the new car has been driven. The timing of the first maintenance varies by car, typically after driving 1,000 to 3,000 kilometers. Completing the first maintenance indicates that the vehicle's break-in period has ended, and it can now be driven at the standard load and normal speed specified for the vehicle.
7
5
Share

What documents are needed for the first maintenance?

For the first maintenance, you need to bring the vehicle's driving license and the vehicle maintenance manual. Check if there is a stamp from the 4S store on the maintenance manual. If there is, you can go to any store for maintenance. If there is no stamp, check the invoice stamp to see where the car was purchased and go to that store for maintenance. Car maintenance refers to the preventive work of regularly inspecting, cleaning, supplying, lubricating, adjusting, or replacing certain parts of the car, also known as car servicing. Modern car maintenance mainly includes the maintenance of the engine system, transmission system, air conditioning system, cooling system, fuel system, power steering system, etc. The purpose of car maintenance is to keep the car clean, maintain normal technical conditions, eliminate hidden dangers, prevent failures, slow down the deterioration process, and extend the service life.
8
3
Share
Trending Ranking
What is the full name of the Prado?
What are the quick repair methods for car scratches?
How to reset the oil change reminder?
4
How to Use the BMW Headlight Cleaning System?
5
What does it mean when all the warning lights on a car come on?
6
What is the brake pad model for the Encore?
7
How to adjust the height of high beam lights?
8
What is the Volkswagen Bora?
9
How to Repair a Broken Car Cigarette Lighter?
10
Is Antifreeze the Same as Windshield Washer Fluid?
More Forum Discussions

What happens if the ABS pump is damaged?

4
1
1

Can You Coast in Neutral with a Manual Transmission Car?

15
4
1

What is the purpose of rotating car tires?

18
1
0

How many colors does the Ora R1 have?

9
5
1
About Us
Terms of Use
Privacy Policy
Help
Contact Us
FAQ
Cookie
Cookie Policy
Cookie Settings
© 2025 Servanan International Pte. Ltd.