What is the difference between Blue Shell and Gray Shell fully synthetic oils?

1 Answers
StReese
07/29/25 7:01pm
Blue Shell and Gray Shell fully synthetic oils differ in terms of composition, replacement intervals, and application scope. Gray Shell oils are all fully synthetic, while Blue Shell oils include both fully synthetic and semi-synthetic varieties. The fully synthetic Gray Shell oil has a higher grade than the semi-synthetic Blue Shell oil, making Gray Shell oil slightly more expensive than Blue Shell oil.
Was this review help?
16
3
Share
More Forum Discussions

How to switch between internal and external circulation in Audi A6L?

On the central control operation panel, there are switch buttons for external circulation and internal circulation. The following is a related introduction about the Audi A6L: 1. Introduction: The Audi A6L is the first Audi model to enter the Chinese market, with its predecessor being the third-generation Audi 100, codenamed C3, introduced in China in 1988. The Audi A6L is a vehicle series developed by FAW-Volkswagen Audi based on the new German A6 and is the successor to the A6. In June 2012, the new-generation Audi A6L was launched, equipped with a 35-TFSI powertrain, and its exterior design somewhat resembles the new version of the A4L. 2. Design: The new Audi A6L adopts a five-link front suspension design, balancing the necessary rigid connection for sportiness and comfort with lower static stiffness. Among them, the hydraulic form of the frame vibration damping support significantly improves the vehicle's driving comfort and effectively reduces the impact and jerky feeling when passing over speed bumps and uneven road surfaces, thereby reducing the impact on the lumbar spine.
6
4
Share

What does '4S store sales within the province' mean?

It refers to the regulation by automobile manufacturers that the sales scope of a 4S store is limited to the province where the store is located. Below is relevant information: 1. Nationwide sales: Vehicles sold nationwide can be registered anywhere, while vehicles sold within the province must be registered within that province. Generally, vehicles sold within the province come with greater discounts, whereas nationwide sales follow a unified national guide price with smaller discounts. Environmental requirements vary by region, meaning some vehicles can only be driven locally and cannot be transferred to other regions, thus limiting their sales to the province. 2. Advantages: The terms '4S store sales within the province' and 'nationwide sales' originate from the regional protection policies of automobile manufacturers. These policies are implemented to prevent vicious competition among 4S stores in different regions. Due to varying manufacturer incentives, market competition, and brand effects across regions, regional protection policies allow manufacturers to effectively adjust and control the sales market.
20
3
Share

What are the solutions for the Chevrolet Cruze's sluggish acceleration and lack of power?

The solutions for the Chevrolet Cruze's sluggish acceleration and lack of power are as follows: 1. High-voltage wires: Replace the original high-resistance ignition wires (typically around 5,000 ohms) with low-resistance wires to maximize the energy transfer from the ignition coil to the spark plugs. However, be cautious of symptoms such as spark jumping and interference. 2. Stabilizer bar: Connect the vehicle's shock towers to enhance body rigidity and prevent deformation of the shocks or body due to aggressive driving. 3. Throttle body upgrade: This can significantly increase air intake flow, but excessive modification may cause engine knocking due to an overly lean air-fuel mixture.
20
0
Share

Why does the Sylphy's engine speed increase but the speed doesn't go up when climbing a slope?

It is most likely a symptom of clutch plate burning. Please pay attention to whether there is any loss of rotation while driving, that is, when you step on the accelerator, the engine speed increases, but the vehicle speed does not increase or increases very slowly. If this happens, replace the clutch plate and pressure plate immediately. If there is no such phenomenon, normal use is fine. More relevant information is as follows: Note 1: For friction plate clutches, if the tightening torque is insufficient, slipping will occur, resulting in high engine speed but the car not speeding up. If the transmission oil has not been replaced for too long or the hydraulic mechanism in the transmission is damaged, it can also cause high engine speed but the car not speeding up. You can first check the condition of the transmission oil and then troubleshoot other fault factors. Note 2: There is a fault in the engine's electronic control system, such as problems with oil pressure or sensors. Generally, it manifests as a sudden drop in speed while driving, and the engine speed does not increase even when stepping on the accelerator, and the car cannot speed up. This may be caused by excessive carbon deposits in the engine, insufficient fuel pressure, or poor ignition and combustion. It is recommended to check whether the car's spark plugs need to be replaced and whether the throttle valve needs to be cleaned.
11
5
Share

Is the 4G15F Engine Outdated?

4G15F engine is not outdated. Here is some relevant information about this engine: 1. Advantages: This engine, based on Great Wall's independently developed technology, incorporates many cutting-edge advanced technologies in the industry, bringing some high-end technologies down to the small SUV segment. For example, the multi-point electronic fuel injection technology allows fuel to be injected into each intake manifold, ensuring thorough mixing of air and fuel for complete combustion. 2. Modifications: To comply with the China VI emission standards, the GW4G15F engine upgraded the original 6-hole injector scheme of the GW4G15B engine to an 8-hole injector. The injector aperture was reduced, and the fuel pressure was increased to 4.5bar, improving gasoline atomization during the injection process.
17
3
Share

What is the fuel consumption per 100 kilometers for the Cruze?

5.7L/100km. The Chevrolet Cruze is a new-generation model developed by General Motors with the goal of creating a benchmark in design and performance for compact cars, integrating global resources. This vehicle is expected to be domestically produced by Shanghai GM next year to compete in the highly competitive compact car market. More details are as follows: 1. Detail one: Fuel consumption per 100 kilometers refers to the amount of fuel a vehicle consumes when driving a certain speed over a distance of 100 kilometers on the road, serving as a theoretical indicator for the vehicle. The fuel consumption per 100 kilometers is a value measured by manufacturers under controlled conditions using a dynamometer installed on the vehicle's chassis, converted into speed parameters, and then calculated to determine the theoretical experimental fuel consumption data for the model at specified speeds. 2. Detail two: Since most vehicles approach their most economical speed at around 90 km/h, the publicly announced theoretical fuel consumption is usually the fuel consumption per 100 kilometers at 90 km/h.
14
3
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.