Browse

Antiques Collectibles Apparel Baby Kids Items Books， Movies And Music Electronics Free Stuff Garden Outdoor Health Beauty Home Goods Home Improvement Supplies Musical Instruments Office Supplies Pet Supplies Sporting Goods Ticket Toys Games Transportation Others

Used Cars New Cars Others

Business Crafts Design And Web Events Home Improvement Legal Lessons Personal Pets Photography Repair And Technical Support Wellness Writing， Translation， And Transcription Others

Activities & Groups Artists & Musicians Classes & Lessons Events Friendship & Networking Lost & Found Rideshare Sports Teams Volunteers Travel & Travel Partners Skills & Language Swap Other

What are the differences between gear oil and engine oil?

1 Answers

DeDelilah

07/30/25 10:29am

Gear oil and engine oil have the following differences: 1. Different working environments: Gear oil is mainly used in manual transmissions, reducers, and differentials; while engine oil is the lifeblood of the engine, primarily used inside the car engine. Comparatively, the working environment of engine oil is more demanding. 2. Different functions: Gear oil is mainly used in gearboxes; engine oil is mainly used in engines. Gear oil is primarily used in gearboxes to lubricate the surfaces of various gears, preventing issues like gear sintering and excessive wear; engine oil performs cleaning, lubrication, cooling, and sealing functions within the engine. 3. Different properties: Gear oil is strongly alkaline; engine oil is weakly alkaline. Gear oil emphasizes protection for gears under high temperatures and is strongly alkaline; engine oil focuses on its low-temperature fluidity, being weakly alkaline, and requires high oxidation resistance to adapt to the high-temperature and high-pressure environment of the engine. 4. Different viscosity grades: Gear oil has higher viscosity than engine oil. Gear meshing is line contact, so gear oil must have extremely high viscosity to form an oil film at the gear meshing points; the lubrication points in the engine are mostly surface contact, requiring lower viscosity standards.

Was this review help?

3

5

Share

More Forum Discussions

Can I tint my car windows before getting license plates?

You cannot tint your car windows before getting license plates, as it may affect the registration process. Detailed explanation of why you cannot tint windows before registration: Incorrect tint color (e.g., too dark) may affect license plate registration. The vehicle's driver's compartment must ensure the driver's forward and side visibility. The visible light transmittance of the windshield and other glass areas in the driver's line of sight must not be less than 70%. Mirror-like reflective sunshade films are prohibited on all window glass. Precautions for car window tinting: Avoid rolling windows up and down for three days after tinting; For vehicles with sunroofs, avoid opening the sunroof while driving, especially at high speeds, during the first three days; In winter, it's recommended not to roll windows up and down or wash the car for one week after tinting. The front and rear window tints may take about a month to fully dry.

What is the process for registering a vehicle after purchase?

The process for registering a vehicle after purchase is: 1. Register at the vehicle management office and after verifying that all vehicle documents are complete, apply for license plates at the vehicle management office. First, a specialized traffic police officer will inspect the vehicle, mainly checking the vehicle identification code, vehicle appearance, and the vehicle's warning triangle plate; 2. After the vehicle inspection, you can go to the vehicle management office lobby to choose a license plate number. Generally, there are two options: self-selection or random selection, and you can choose either; 3. After selecting the number, pay the fees and wait to receive the license plates, which usually takes three to five working days; 4. Before processing, you need to obtain the vehicle qualification certificate, the triplicate purchase invoice, pay the vehicle purchase tax, and have the original and copy of the tax booklet ready. Also, prepare the original and copy of your ID card. If you are not a local resident, you need to provide the original and copy of your temporary residence permit.

How often should the brake fluid of an Audi A3 be replaced?

The brake fluid of an Audi A3 should be replaced every 20,000 kilometers using a brake fluid replacement machine. Brake fluid, also known as brake liquid or hydraulic fluid, is made from refined diesel distillate with thickeners and antioxidants. There are three types of brake fluid: mineral oil-based, alcohol-based, and synthetic. The Audi A3 is a sedan produced by Audi, developed on the Volkswagen MQB platform. It features a lightweight design with aluminum materials and is powered by various engines including the 1.4TFSI and 1.8TFSI. The car's front suspension is a MacPherson strut type, while the rear axle has a torsion and crank-type structure with separately arranged springs and shock absorbers. In addition to excellent handling, the rear suspension layout also offers high space utilization.

What are the differences between unibody and body-on-frame structures?

The differences between unibody and body-on-frame structures lie in their distinct body constructions: unibody employs a separated load-bearing frame structure, while body-on-frame uses an integrated body structure. Body structure refers to the arrangement of various components forming the vehicle body and their assembly methods. Based on load-bearing methods, body structures can be categorized into: body-on-frame, unibody, and semi-unibody. Body-on-frame vehicles feature a rigid frame (also called chassis frame), where the frame and body are flexibly connected via springs or rubber cushions. Components like the engine, part of the transmission system, and body assemblies are mounted on the frame using suspension systems. Unibody structures integrate components such as the front end, side panels, rear section, floor pan, engine, front/rear suspensions, and part of the transmission system directly onto the body, with body loads transmitted to wheels through suspension systems.

Where is the cigarette lighter in the Ford Escort?

The cigarette lighter in the Ford Escort is located in front of the gear lever. To use it, press it down and wait for it to heat up. Once heated, it will pop out automatically with the other end glowing red, ready for lighting cigarettes. The cigarette lighter is a standard component in all vehicles, with some premium cars featuring two lighters—one in the front and another in the rear for the convenience of backseat passengers. When using the lighter, insert and remove it vertically without shaking, as frequent wiggling during removal can lead to loosening and short circuits. The Ford Escort measures 4587mm in length, 1825mm in width, and 1490mm in height, with a wheelbase of 2687mm. This model offers a class-leading six-airbag protection system, including front airbags, side airbags, and side curtain airbags for both front and rear seats, providing excellent collision protection for all occupants.

What is the difference between the Mercedes-Benz CLA and A?

The difference between the Mercedes-Benz CLA and A is the number of compartments: the Mercedes-Benz CLA is a sedan; the Mercedes-Benz A is a hatchback. The Mercedes-Benz CLA is the brand's first four-door coupe developed based on a compact car chassis, utilizing the new MFA lightweight front-wheel-drive platform. The dimensions of this car are 4673mm in length, 1777mm in width, and 1417mm in height, with a wheelbase of 2699mm. It is equipped with four engine options: a low-power version of the 1.6t engine, a high-power version of the 1.6t engine, a low-power version of the 2.0t engine, and a high-power version of the 2.0t engine. The higher-end models also feature an all-wheel-drive system, and all models come with a 7-speed dual-clutch transmission.

Trending Ranking

What are the differences between the Mercedes-Benz V260 and V250?

Is the Lynk & Co 03+ AWD?

What is the function of a car sunroof?

What is the impact of adding a tailpipe tip on a car?

Why Does the Bora Make Noise When Reversing?

What are the seven items to collect when taking delivery of a new car?

How often should BYD pure electric vehicles be serviced?

Why can't the seat of the Mercedes-Benz C-Class be adjusted suddenly?

What Causes the Jerking When Releasing the Accelerator Pedal?

Why Does the Alarm Still Sound After Topping Up the Coolant?

More Forum Discussions

How Many Steering Wheel Turns and Steering Angles Are There?

Is Antifreeze the Same as Coolant?

Is FAW a Domestic or Joint Venture Brand?

Can a 92 car use 95 gasoline?

Help

Cookie

Cookie Settings

© 2025 Servanan International Pte. Ltd.