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Can Semi-Synthetic and Full Synthetic Engine Oils Be Mixed?

1 Answers
DaniellaDella
07/30/25 12:00am
Semi-synthetic and full synthetic engine oils should not be mixed. The reason is that full synthetic oil contains no mineral oil, while semi-synthetic oil contains a small amount of mineral oil. Engine oil, also known as motor lubricant, is composed of base oil and additives. The base oil is the main component of lubricating oil, determining its basic properties, while additives compensate for and improve the deficiencies in the performance of the base oil. The differences between synthetic and semi-synthetic oils include: 1. Different base oils: Synthetic oil is a mixture of Group III, IV, and V base oils, while semi-synthetic oil uses Group III base oil. 2. Different replacement intervals: Synthetic oil has a service life of one year or 10,000 kilometers, whereas semi-synthetic oil should be replaced every six months or 7,500 kilometers.
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How to Open the Fuel Tank of Borgward BX7?

To open the fuel tank of the Borgward BX7, simply press the fuel tank cover when the vehicle is unlocked. The inner fuel tank cover has a designated placement area, so the owner does not need to hold it during refueling. The Borgward BX7 features a robust design with a roof-mounted spoiler that integrates a high-mounted brake light, using LED light strips. Additionally, the new car adopts a dual-exhaust layout on both sides. The dimensions of the Borgward BX7 are 4715mm in length, 1911mm in width, and 1690mm in height, with a wheelbase of 2760mm. It is equipped with a 6-speed automatic transmission and features such as front seat heating, rear parking radar, automatic parking, electronic parking brake, ECO mode, and electronic stability control.
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Which country produces the Lynk & Co 05?

The Lynk & Co 05 is produced in China. The Lynk & Co 05 is a compact 5-door, 5-seat SUV with dimensions of 4592mm in length, 1879mm in width, and 1628mm in height, and a wheelbase of 2734mm. It is equipped with an 8-speed automatic transmission and can reach a top speed of 230 kilometers per hour. The front suspension of the Lynk & Co 05 uses a MacPherson independent suspension, while the rear suspension employs a multi-link independent suspension. The tire specifications are 235/50R19. It comes with features such as ABS anti-lock braking system, brake force distribution, brake assist, traction control, tire pressure monitoring, full-seatbelt reminder, child seat interface, keyless start system, and a rearview camera.
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Which car has a vertical logo?

The car with a vertical logo is the WEY brand under Great Wall Motors. Taking the WEY VV7 as an example: it uses a 2.0T L4 turbocharged engine with a maximum torque of 387 N·m and a maximum horsepower of 227. It is equipped with body stability control, brake assist, engine electronic anti-theft system, full-speed adaptive cruise control, front and rear radar, 360-degree panoramic imaging, and engine start-stop technology. The WEY VV7 has a length, width, and height of 4760mm, 1931mm, and 1655mm respectively, with a wheelbase of 2950mm, a top speed of 205 km/h, and is equipped with a 7-speed dual-clutch transmission.
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What brand of tires does the Geely Emgrand use?

Geely Emgrand uses Giti tires. Tires are circular elastic rubber products assembled on various vehicles or machinery to roll on the ground. They are usually mounted on metal rims, supporting the vehicle body, cushioning external impacts, enabling contact with the road surface, and ensuring the vehicle's driving performance. The Geely Emgrand is a compact 4-door 5-seater sedan with dimensions of 4632mm in length, 1789mm in width, and 1470mm in height, and a wheelbase of 2650mm. It is equipped with a 5-speed manual transmission, reaching a top speed of 170 kilometers per hour. The fuel tank capacity is 50L, featuring MacPherson strut independent front suspension and torsion beam non-independent rear suspension, with a front-wheel drive configuration.
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What does a triangle with an exclamation mark in a car mean?

A triangle with an exclamation mark inside indicates a malfunction in the vehicle's general performance, components, or functions. Common issues include parking sensor failure, fuel cutoff system intervention or malfunction, external light failure, or engine oil pressure sensor failure. Solution: It is necessary to visit a 4S shop for inspection to identify the source of the fault. The exclamation mark is a common fault indicator in cars. Besides the triangle with an exclamation mark, there are four other forms of exclamation mark warnings: a yellow gear with an exclamation mark, a red circle with parentheses and an exclamation mark in the middle, a yellow bracket with a horizontal line and an exclamation mark in the middle, and a yellow bulb with an exclamation mark. Below is a detailed analysis of these four situations: Automatic transmission fault: A yellow gear with an exclamation mark is the automatic transmission fault warning light, indicating a transmission malfunction or transmission lubricant below the normal range. Transmission fluid should be replaced promptly. Brake system fault: A circle with parentheses and an exclamation mark in the middle represents a brake system warning, mainly indicating a brake system malfunction or low brake fluid level. Immediate inspection of the brake system is required to avoid accidents. Tire pressure abnormality: A bracket with a horizontal line and an exclamation mark in the middle represents the tire pressure monitoring warning light, which illuminates when the tire pressure is too low. Check the tire pressure and restore it to the normal range. Lighting fault: A yellow bulb with an exclamation mark is the lighting fault indicator, signaling a malfunction in one of the vehicle's lights. Solution: Visit a 4S shop for inspection as soon as possible, or conduct a self-check, focusing on commonly used bulbs such as turn signals, fog lights, and interior lighting to identify the issue.
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How to Reset a Malfunctioning Door Lock?

Door lock malfunctioning reset method: First, check whether the door is properly closed. If the door is not properly closed, the door lock will automatically pop up. If the door has been involved in a collision, the impact may have triggered the door sensor, causing the car's computer to mistakenly judge that the door is not properly closed, leading to the door lock malfunctioning. You can go to a 4S shop for inspection and reset. The door lock is also called the central lock. The central lock in the car refers to the switch located on the driver's door, which can simultaneously control the closing and opening of all car doors. The central door lock is mainly composed of the door lock switch, door lock actuator, and door lock controller. Its working principle is to convert electrical energy into mechanical energy, using a motor to drive the gears to open and close the door.
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