(1) Identifying Counterfeit Gasoline
One of the easiest ways to identify counterfeit gasoline is by checking its color. Genuine gasoline typically has a light yellow, red, or orange hue. Another method is to shake the fuel and observe the bubbles; authentic gasoline will form bubbles that disappear quickly. The smell is also an important indicator—real gasoline has a strong, distinct petrol odor. When touched, it feels slightly sticky and gives a cool sensation on the skin. Additionally, genuine gasoline evaporates very quickly. If none of these characteristics are present, it is likely to be counterfeit.
(2) Identifying Fake Kerosene
Authentic kerosene is usually clear or pale yellow and has a strong kerosene scent. After shaking, the bubbles should disappear rapidly. When touched, it feels slightly smooth but not oily. It also has poor volatility compared to real gasoline. If any of these features are missing or unclear, it may be fake or low-quality kerosene.
(3) Identifying Fake Light and Heavy Diesel
Genuine light diesel fuel has a tea-yellow color with a blue sheen and a distinct diesel smell. After shaking, it produces small bubbles that vanish quickly. It feels smooth when touched and leaves an oily residue on the hands. Heavy diesel, on the other hand, is more tan in color, has a mild diesel odor, and also forms small bubbles that disappear fast. It should feel smooth and oily as well. If any of these characteristics are absent, it is likely to be counterfeit diesel.
(4) Identifying Genuine No. 0 and No. 20 Diesel
No. 0 diesel has a yellowish color and a flash point of at least 60°C. Low-quality diesel, however, tends to be black with a high carbon residue content and a lower flash point, often around 43°C. To distinguish between No. 0 and No. 20 diesel, you can use several methods:
1. **Cooling Test**: Place a small amount of diesel in a glass tube and put it in ice water. If it solidifies immediately, it’s not No. 0 diesel. If it doesn’t solidify, it is likely No. 0. If no ice water is available, use cold water instead.
2. **Combustion Test**: Compare the smoke produced during combustion. No. 20 diesel tends to produce more black smoke than No. 0.
3. **Oil Observation**: No. 0 diesel contains less wax and has a lighter color, while No. 20 has more wax and appears darker.
4. **Density Test**: No. 0 diesel is less dense than No. 20. When mixed in a transparent container, No. 20 will sink while No. 0 floats. If this doesn't happen, it's probably counterfeit.
(5) Identifying Fake Engine Oils
Engine oils for gasoline and diesel engines have specific characteristics. First, check the color and smell. Genuine engine oil is dark brown to blue-yellow and has an acidic odor. When shaken, it creates bubbles that take time to disappear, and the oil may leave a yellow residue on the bottle. When touched, it should feel slightly emulsified and sticky, and can form short filaments. If it lacks these traits, it may be fake.
(6) Identifying Fake Road Engine Oil
Luluda engine oil is widely used and easy to recognize. Authentic Luluda comes in an alloy steel container with a large “Rotella DX†logo. The label includes the words “Lulu Da 40†and a scalloped pattern with “Shell†underneath. It also features a 3D anti-counterfeiting label with the word “Shell†and a scallop design. Counterfeit versions lack these features. Simply checking for the anti-counterfeiting label can help determine authenticity.
(7) Identifying Fake Gear Oil
To spot fake gear oil, start by examining its color. Real gear oil is black or dark green. Smell it—genuine gear oil has a burnt or oily odor. Check its flow; authentic gear oil clings to the bottle and doesn’t run off easily. When shaken, it should produce few bubbles. Lastly, test its viscosity. Genuine gear oil feels thick and leaves a residue when touched, and it can be stretched into thin threads. If it lacks these qualities, it may be counterfeit.
(8) Identifying Fake Calcium-Based Grease
First, look at the color and texture. Genuine calcium-based grease is yellow-brown, has a uniform texture, and feels like ointment. Perform a water test: real grease should not emulsify or change much in water. When touched, it should feel smooth but not sticky or stretchy. If it behaves differently, it is likely fake.
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