A circle on a car is not just a decorative element, but an important element of marking, indicating the type of fuel, environmental class or purpose of the technical fluid. Drivers often notice that in a circle by car a letter or number is written that can be confusing when first refueling or servicing. For example, the symbol “E” in a circle on the gas tank flap means Euro standard, and “G” means the type of fuel (petrol or gas). Understanding these symbols is critical because using the wrong fuel can cause serious engine damage and costly repairs.
In this article we will analyze all the possible options for what can be written in a circle by car, where exactly to look for these symbols and how to interpret them correctly. We will pay special attention to fuel labeling, environmental standards and designations of technical fluids. We will also consider cases when such symbols are found on body elements or in the interior, and explain their purpose. Knowing these details will help you avoid mistakes when operating your car and properly maintain it.
Incorrect symbol decoding in a circle by car can lead to the use of unsuitable materials, which is especially dangerous for modern engines with high demands on the quality of fuel and lubricants. For example, pouring diesel fuel into a gasoline engine or using a fluid with the wrong viscosity grade can cause serious problems. Therefore, it is important to understand what these symbols mean and where to look for them.
Where to look for a circle with symbols on a car
First place to look circle by car with important information - this is the gas tank flap. This is where manufacturers place key designations of fuel type and environmental standard. This is usually a sticker or embossed symbol on the inside of the hatch. In some car models, such markings may be located on the end of the hatch or near it.
The second important place is the engine compartment. Here in a circle by car Refill points for technical fluids may be indicated: brake system, power steering, coolant. Often these designations are made in the form of symbols on or near the lids of the tanks. For example, the "DOT" symbol in a circle indicates the type of brake fluid.
Note the color coding: a green circle often means eco or gas, blue for diesel, and red for petrol. This helps you quickly find your way around even without reading the text.
The third place is the car interior. Here in a circle by car controls or information indicators may be indicated. For example, the start-stop system activation button often has the symbol "A" in a circle. Also, similar symbols can be found on the climate control or multimedia system control panel.
- 🔍 The gas tank flap is the main area for searching for fuel type and eco-standard
- 🔧 Engine compartment - marking tanks with technical fluids
- 🚗 Car interior - designations of buttons and indicators on the control panel
- 📄 Vehicle documentation - detailed explanation of all symbols and designations
It is important to note that the location and appearance circles by car may vary depending on vehicle make and model. Therefore, it is always recommended to refer to the instruction manual for accurate information. In some cases, manufacturers use unique characters that are not standard.
Explanation of the symbols in the circle on the gas tank flap
The most important information in a circle by car usually located on the gas tank flap. Here you can find several types of notation. The first is the letter "E" in a circle followed by a number (eg E5, E10, E85). This designation indicates the bioethanol content of gasoline. The number after the "E" indicates the percentage of ethanol in the fuel.
The second type of designation is the letter "G" in a circle. It indicates the type of fuel: "G" means gasoline (from the German "Gasolin"), and "D" means diesel fuel. In some countries you may see the designation “LPG” or “CNG” in a circle, which indicates the possibility of using liquefied or compressed gas, respectively.
The third type is the designation of an environmental standard. Here in a circle by car a Roman numeral may be written indicating the Euro class (for example, Euro 4, Euro 5, Euro 6). This is important for understanding fuel quality requirements and compatibility with exhaust gas treatment systems.
⚠️ Attention: Fueling your vehicle with fuel containing more ethanol than the manufacturer's approved fuel may cause damage to the fuel system and engine. Always check the operating instructions for acceptable values.
The octane number of the recommended fuel may also be indicated on the gas tank flap. This is important to ensure optimal engine performance and prevent knocking. For example, if "95" is indicated, this means that you must use gasoline with an octane rating of at least 95.
Designations of technical fluids in circles under the hood
Under the hood of a car in a circle by car You can find many designations associated with technical fluids. Each of them has its own meaning and requires the use of the appropriate type of fluid. The wrong choice can have serious consequences for the vehicle's performance.
The most common designations:
- 🔴 Brake fluid: usually indicated by a "DOT" symbol in a circle indicating the grade (DOT 3, DOT 4, DOT 5). It is important to use the fluid of the exact class recommended by the manufacturer.
- 🔵 Coolant: may be indicated by a thermometer symbol or a wavy line in a circle. The color of the liquid also matters and must comply with the manufacturer's requirements.
- 🟢 Power steering fluid: often indicated by a steering wheel symbol or the letters "PSF" (Power Steering Fluid) in a circle.
- 🟡 Engine oil: indicated by an oil can symbol or the letters “OIL” in a circle. It is also important to consider the viscosity and quality class of the oil.
☑️ Checking technical fluids
In some cars in a circle by car Under the hood there may be specific fluid specifications, such as "G12" for antifreeze or "ATF" for transmission oil. These markings are critical to proper vehicle maintenance.
| Symbol in a circle | Meaning | Recommended Liquid | Check frequency |
|---|---|---|---|
| DOT 4 | Brake fluid | DOT 4 brake fluid | Every 10,000 km |
| G12 | Coolant | Antifreeze class G12 | Every 20,000 km |
| PSF | Power steering fluid | Special fluid for power steering | Every 30,000 km |
| 5W-30 | Motor oil | Oil viscosity 5W-30 | Every 10,000 km |
Therefore, always use only fluids recommended by the manufacturer.
Environmental standards and their designations
Environmental standards play an important role in the modern automotive industry, and their designations can often be found in a circle by car. These standards determine the level of emissions of harmful substances and requirements for fuel quality.
The most common designations of environmental standards:
- 🌿 Euro 4: standard in force from 2005 to 2008. Requires the use of low sulfur fuel.
- 🌿 Euro 5: standard introduced in 2009. Provides more stringent NOx and particulate matter emissions requirements.
- 🌿 Euro 6: current standard, in force since 2014. Requires the use of complex exhaust gas purification systems.
History of environmental standards
The first Euro 1 standard was introduced in 1992. Since then, requirements have been constantly becoming more stringent, which leads to the development of exhaust gas purification technologies and improved fuel quality.
Environmental standard designation in a circle by car helps determine what fuel needs to be used and what exhaust gas treatment systems are installed on the vehicle. This is especially important when buying a used car or when traveling to countries with different environmental requirements.
⚠️ Attention: Using fuel that does not meet the vehicle's environmental standards can lead to rapid failure of the catalyst and particulate filter.
In some countries, the environmental standard also affects the cost of car ownership, taxes and the ability to enter certain areas of the city. Therefore, knowing your environmental class can be helpful.
Special designations for alternative fuels
With the development of alternative fuels, more and more specific designations are appearing in a circle by car. These symbols help identify the type of fuel used and the corresponding filling stations.
Basic designations for alternative fuels:
- ⛽ LPG (Liquefied Petroleum Gas): liquefied petroleum gas (propane-butane). Indicated by a flame symbol in a circle or the abbreviation LPG.
- ⛽ CNG (Compressed Natural Gas): compressed natural gas (methane). Indicated by the symbol "CNG" in a circle.
- ⚡ Electric: electric cars. Indicated by a lightning symbol in a circle or the letter “E”.
- 💧 Hydrogen: hydrogen cars. They are indicated by the symbol “H2” in a circle.
Remember: Using the wrong type of fuel can cause serious damage to your vehicle and may even cause a fire or explosion.
For alternative fuel vehicles in a circle by car Additional parameters may also be specified, such as gas pressure or the type of battery used. This data is important for the safe operation and maintenance of the vehicle.
Owners of vehicles with alternative fuels are advised to carefully study all symbols and follow the manufacturer's recommendations. This will help avoid warranty issues and ensure safe operation of the vehicle.
Frequently asked questions (FAQ)
What does the letter "E" in the circle on the gas filler door mean?
The letter "E" in a circle indicates the bioethanol content of gasoline. The number after the letter indicates the percentage of ethanol (for example, E5 - 5% ethanol, E10 - 10% ethanol).
Is it possible to refuel a car marked E5 with E10 fuel?
In most cases, modern vehicles designed for E5 can run on E10, but it is recommended to check your owner's manual for this information. Prolonged use of fuels containing higher ethanol content may damage some parts of the fuel system.
Where can I find information about the type of brake fluid for my car?
Information about the type of brake fluid is usually located on the brake fluid reservoir cap under the hood. This data can also be found in the vehicle's owner's manual.
What should I do if I filled in with the wrong fuel?
If you have filled with the wrong fuel, do not start the engine. It is necessary to drain the fuel from the tank and flush the fuel system. It is better to contact a specialized service to perform this work.
How often do you need to change technical fluids in a car?
The frequency of replacing technical fluids depends on the type of fluid and the manufacturer's recommendations. Typically, brake fluid is changed every 2 years, antifreeze - every 3-5 years, engine oil - every 10-15 thousand km.
Additional Tips
Always keep your vehicle's owner's manual in the glove compartment. This will help you quickly find information about any symbols and service requirements when you need them.
Understanding what it means in a circle by car, helps to properly maintain the car and avoid serious mistakes. These small symbols carry important information about the type of fuel, technical fluids and environmental standards. Always pay attention to these symbols when refueling and servicing your vehicle.
⚠️ Attention: If you are in any doubt about the markings on your vehicle, refer to the official owner's manual or consult an authorized service center.
Regular inspection and correct maintenance according to labeling in a circle by car will extend the life of your car and ensure safe operation. Do not ignore these important symbols as they are designed to protect your vehicle and your safety.