What does non-standard oil mean?

[StBrady]

Diesel refined from waste oils such as used engine oil and tire oil is called non-standard diesel. Below is an introduction to related content: Non-standard diesel: It is widely used in most enterprises and factories in Guangdong (for generators, boiler combustion, etc.), but it must not be used in vehicles. Non-standard diesel is usually purchased in large quantities by oil depot operators or diesel traders, who then deliver it to various regional factories according to customer needs. National standard diesel: The density range of national standard diesel is 0.810～0.855, with different common types such as: 0# diesel with a density of 0.84 kg/liter, +10# diesel with a density of 0.85 kg/liter, +20# diesel with a density of 0.87 kg/liter, -10# diesel with a density of 0.84 kg/liter, -20# diesel with a density of 0.83 kg/liter, -30# diesel with a density of 0.82 kg/liter.

[Kendall]

I've been driving for many years, and non-standard fuel refers to gasoline or diesel that doesn't meet the national fuel quality standards. It might be purchased from some small gas stations. After filling up with it, the car will noticeably shake, have poor acceleration, or even trigger engine warning lights, severely affecting driving experience and safety. I personally experienced this once when I opted for cheaper low-priced fuel, only to break down halfway, costing nearly two thousand yuan in repairs. The reason is that non-standard fuel contains more impurities, fails to meet octane requirements, causes incomplete combustion leading to carbon deposits, and damages the engine. I recommend everyone to choose reputable branded gas stations when refueling—their fuel sources are legitimate and undergo strict testing. Although slightly more expensive, it saves hassle in the long run. Also, pay attention to weather changes; in cold conditions, non-standard fuel is more prone to solidifying, making starting difficult and directly impacting daily commutes. Avoiding non-standard fuel isn't just about protecting your car—it's also about preventing unexpected expenses and troubles.

[SanGianna]

A car enthusiast friend mentioned that non-standard fuel refers to oil products that fail to meet fuel quality standards. For example, gasoline mixed with other substances or with low octane ratings can lead to poor combustion in the engine, resulting in reduced power, increased fuel consumption, and a higher likelihood of carbon deposits clogging the fuel injectors. I once tried such fuel—the engine noise was unusually loud, and it even stalled during a long-distance drive, which was extremely dangerous. Fixing it required disassembling and cleaning the entire system, which was very costly. I recommend drivers check the qualifications and reviews of gas stations before refueling and opt for large, reputable chain brands for better reliability. In the long run, using high-quality fuel extends the lifespan of engine components and avoids costly overhauls, making it a smart investment. Remember, don’t sacrifice safety for a cheaper price—safe driving comes first.

[Braxton]

Non-standard fuel, simply put, is substandard gasoline. Like many novice car owners, I didn’t understand what non-standard fuel was when I first bought my car. I once filled up with cheap gas from a small station, and my car had trouble starting, made more noise, and even emitted black smoke. After researching, I learned it didn’t meet standards, contained more harmful substances, and caused faster engine wear. A mechanic even warned that severe cases might require part replacements. Now, I only refuel at reputable gas stations—though it costs a bit more, the peace of mind is worth it.