···
Log in / Register

There are generally three types of engine oil. What are they?

6Answers
OJade
07/29/2025, 07:35:28 PM

Engine oil is divided into the following three categories: conventional mineral oil, semi-synthetic oil, and full synthetic oil. Below are the relevant introductions: 1. Mineral oil: Mineral oil is a commonly used lubricant in the market. It is derived from the distillation process of petroleum, where useful substances like gasoline and aviation oil are separated, and the remaining base oil is further processed and extracted. Essentially, it utilizes the inferior components of crude oil. 2. Semi-synthetic oil: Semi-synthetic oil is made using semi-synthetic base oil, which is a product of mineral oil purified through hydrocracking technology. It is a mixture of mineral oil and full synthetic oil in a 4:6 ratio. The purity of semi-synthetic oil is very close to that of full synthetic oil, but its cost is slightly higher than mineral oil, making it an ideal transitional product from mineral oil to synthetic oil. 3. Full synthetic oil: Full synthetic oil is the highest grade of engine oil. It is derived from ethylene and propylene dispersed from natural gas or gas in crude oil, which then undergoes complex chemical reactions like polymerization and catalysis to form a lubricating fluid composed of large molecules.

Was this review help?
104
Share
VanKathryn
08/15/2025, 10:33:00 PM

I used to use conventional motor oil, but later I learned that there are actually three types of engine oil. Mineral oil is the most basic, inexpensive but with shorter change intervals, typically needing replacement every 5,000 kilometers. Semi-synthetic oil blends mineral and synthetic oils, offering a balance between performance and price, making it suitable for most people. Full synthetic oil is the most technologically advanced—though more expensive, it provides the best engine protection and can extend oil change intervals to over 10,000 kilometers. After driving my current car for several years and switching to full synthetic oil, I noticed a clear reduction in engine noise and a slight improvement in fuel efficiency. If you frequently drive long distances or own an older vehicle, I’d recommend spending a bit more on full synthetic oil for greater peace of mind.

Was this review help?
10
Share
Expand All
MacHazel
10/18/2025, 10:53:57 PM

Speaking of engine oil types, I've got plenty of firsthand experience keeping both our family's old and new cars in top shape. These three types basically boil down to mineral oil, semi-synthetic oil, and full synthetic oil. Mineral oil is the most budget-friendly but offers average performance - it works fine for my small-displacement grocery-getter. Semi-synthetic strikes a good balance, being more durable than mineral yet cheaper than full synthetic, which is what I consistently use now. Full synthetic delivers the best performance, especially ideal for turbocharged engines or frequent highway driving. I remember constantly worrying about oil change intervals when using mineral oil, but switching to semi-synthetic has been much more worry-free - going 7,000-8,000 km between changes is no problem. Each type has its merits, and the key is matching it to your specific driving habits.

Was this review help?
14
Share
Expand All
Aubrey
12/01/2025, 10:29:46 PM

A friend just bought a car and asked me about choosing engine oil. Basically, there are three types: mineral oil, semi-synthetic oil, and full synthetic oil. Mineral oil is directly refined from crude oil, the most economical but with average performance. Semi-synthetic oil adds synthetic compounds to mineral oil, offering a good balance of cost and performance. Full synthetic oil is carefully formulated in labs, the most expensive but provides excellent protection. For someone like me who often deals with city traffic jams, semi-synthetic is the most cost-effective. If you frequently drive long distances or mountain roads, full synthetic is more suitable. The key to choosing engine oil isn't about price, but what protection your engine needs.

Was this review help?
10
Share
Expand All
MackenzieDella
01/21/2026, 11:53:15 PM

I know all too well that engine oil is categorized into three types: mineral oil, semi-synthetic oil, and full synthetic oil. Mineral oil is the basic option with low cost, suitable for older vehicles. Semi-synthetic oil blends natural and synthetic components, offering the most balanced performance for regular family cars. Full synthetic oil is entirely a product of technology, with more stable molecular structures, making it particularly ideal for extremely cold weather. Back when I drove a manual transmission old car, mineral oil was passable, but now that I've switched to an automatic, I use full synthetic oil directly. Choosing engine oil isn't just about comparing prices—it's about evaluating real performance parameters like lubrication effectiveness, cleaning capability, and durability. Each type of oil has its suitable scenarios, and picking the right one ensures your engine lasts longer.

Was this review help?
19
Share
Expand All
StephenAnn
04/17/2026, 11:53:31 PM

The kid next door always asks me about the types of engine oil. Simply put, there are three categories: mineral oil, semi-synthetic oil, and full synthetic oil. Mineral oil is cheaper but offers average engine protection, so I recommend it for beginners practicing driving. Semi-synthetic oil strikes a balance between performance and price, making it suitable for daily commuter vehicles. Full synthetic oil is indeed more expensive but worth every penny, as it performs stably in both high and low-temperature environments. Having tried all three types myself, I clearly felt that full synthetic oil makes acceleration smoother and the engine less strained when the air conditioning is on. With fuel prices so high these days, choosing the right oil can even save you a bit on fuel costs. A special reminder for those who frequently travel with a full load: the protective qualities of full synthetic oil are definitely worth the extra hundred bucks or so.

Was this review help?
19
Share
Expand All
More Q&A

What are the differences between the Changan M70 and M80?

Changan M70 is more affordable than the M80. The M70 and M80 share a nearly identical exterior design, featuring a multi-horizontal grille at the front with a wide chrome strip integrating the Changan logo on top. The side profile showcases natural flowing lines, while the rear maintains a boxy shape. More details are as follows: 1. The Changan M70 made its debut at the Chongqing International Auto Show in June 2017. It is an upgraded large micro-van model developed by Changan Light Vehicle, primarily targeting individual business owners, private enterprises, and logistics companies for cargo transportation while also accommodating some passenger functions. The Changan Ruixing M70 is positioned as a stylish commercial light passenger vehicle, designed to meet the needs of individual entrepreneurs in the growth phase of their businesses and institutional users requiring both passenger and cargo capabilities. 2. The Changan M80 is the first strategic model independently developed by Changan Light Vehicle for the light passenger market with full intellectual property rights and strict adherence to international standards. It addresses the urgent demands of light passenger users in five key areas: space, fuel efficiency, comfort, safety, and appearance. The M80 offers a new exterior design, comprehensive fuel savings, all-around safety, versatile space, and an enjoyable driving experience, positioning itself as a 'multi-functional light passenger' vehicle capable of both passenger transport and cargo hauling.
109
Share

What Causes No Sound in Car Bluetooth?

There are several reasons why a car's Bluetooth connection may have no sound, including the car's multimedia system volume not being turned on, the phone volume not being turned on, incompatibility between the phone and the car's computer, and Bluetooth signal interference. Car multimedia system not turned on: When connecting to Bluetooth in the car and there is no sound, check whether the car's multimedia system volume is turned on. If the volume is not turned on or is in silent mode, it will result in no sound when connected to Bluetooth. In this case, simply turning on or increasing the volume will resolve the issue. Phone volume not turned on: In this situation, increase the phone's volume or ensure the phone is not in silent mode. Incompatibility between phone and car computer: If the phone and car computer are incompatible, it may result in failure to connect to Bluetooth or error codes appearing after connection. This requires adjusting the car's Bluetooth settings or consulting a professional for inspection. Bluetooth signal interference: When there are too many electronic devices in the car or when passing through areas with weak signals, Bluetooth signal interference may occur. Things to note when using Bluetooth: If the media audio on the phone is not turned off, it can cause signal interference with the Bluetooth function, leading to no sound after connecting to Bluetooth in the car. To use Bluetooth, enable the Bluetooth function on the phone, set it to 'visible to all' in the Bluetooth settings, search for Bluetooth devices, select the appropriate device once found, enter the correct password when prompted, and once connected, sound will play.
117
Share

Can Fuel System Cleaner Be Added Directly to the Fuel Tank?

Fuel system cleaner can be added directly into the fuel tank. The functions of fuel system cleaner are as follows: Removes gums and deposits from the fuel system, saves fuel, reduces exhaust emissions, protects mechanical components, and effectively prevents corrosion and rust of parts. If car owners want to check the remaining fuel level in the tank, they can observe the fuel gauge on the right side of the dashboard, which is marked with E and F. When the needle is close to E, it indicates low fuel, and when it is near F, it means the fuel level is sufficient. Methods to open the fuel tank: Mechanical key opening: This is commonly seen in some rugged off-road vehicles. Nowadays, most family cars do not use mechanical keys for opening the fuel tank due to their relatively complicated operation. In-car switch method: The location of the in-car fuel tank switch varies among different car models. It might be on the floor to the left of the driver's seat, on the left front door panel, or on the center console, usually marked with a fuel pump icon. However, it is important to note that the in-car switch can easily lead to forgetting to turn off the engine before refueling, so car owners should always remember to turn off the engine before refueling. Press-type opening: The press-type fuel tank door is currently the most convenient method. The car owner only needs to park the car, and the fuel attendant can press to open the fuel tank for refueling. However, when not parked for refueling, car owners should remember to lock the central control, otherwise, the fuel tank cap can be opened.
103
Share

What Does Engine Coating Mean?

Engine coating has the following meanings: 1. Definition: One is the protection of the engine interior, mainly for lubrication and protection of the engine walls, enhancing wear resistance, and moderately extending the engine's performance. The other is the protection of the engine exterior, primarily for cleaning and polishing. 2. Two methods: The essence of glazing is the same as waxing. "Glaze" is extracted from petroleum and mixed with some auxiliary materials to form a coating. After cleaning the car surface, the "glaze" is applied through vibration to allow it to fully penetrate the paint surface. Crystal coating uses inorganic substances such as silicon dioxide, forming a solid crystalline barrier on the surface through the action of molecular polymers. This barrier layer has functions such as resisting ultraviolet rays, repelling oil, low surface energy, and hydrophobicity, thereby protecting the paint surface.
119
Share

What are the speed ranges for first, second, and third gears in Subject Three?

In Subject Three, the permitted speed range for first gear is 0 20, for second gear is 10 30, and for third gear is 20~40. Below is relevant information about Subject Three: 1. Subject Three: Subject Three includes the road driving skills test and the safe and civilized driving knowledge test. It is part of the motor vehicle driver's license assessment and is the abbreviated term for the road driving skills and safe and civilized driving knowledge test subjects in the motor vehicle driver's examination. The content of the road driving skills test varies for different types of vehicles eligible for driving. 2. Test Content: The driving skills test includes preparation before driving, simulated lighting test, starting, driving in a straight line, gear shifting operations, changing lanes, parking by the roadside, driving straight through intersections, etc. The safe and civilized driving knowledge test covers requirements for safe and civilized driving operations, safe driving knowledge under adverse weather and complex road conditions, etc.
114
Share

What are the symptoms of a faulty car turbocharger?

Symptoms of a faulty car turbocharger: blue or white smoke from the exhaust pipe, decreased power, increased fuel consumption, higher oil consumption, unstable turbo pressure, abnormal noises, high water temperature, unstable engine speed, and ineffective turbocharging effect. Here is additional information: 1. Poor sealing of the turbocharger impeller shaft: Symptoms: Blue smoke from the exhaust at idle, varying in intensity. No blue smoke while driving, but oil consumption is noticeable. 2. Severe clogging of the exhaust gas recirculation pipe: Symptoms: Blue smoke from the exhaust at idle and while driving, worsening when accelerating, with significant oil consumption. 3. Wear or aging of piston rings, cylinder walls, or valve stem seals: Symptoms: Heavy blue smoke from the vehicle, abnormal noises from the turbocharger turbine end, and oil leakage from the turbocharger turbine end. 4. Cracked turbocharger air duct: Symptoms: Abnormal 'fluttering' noises when accelerating or decelerating.
115
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.