I believe that many car owners and friends have such doubts. They drive from one place to another, and their place is ordinary gasoline, but when they go to another place, they can only add ethanol gasoline. At this time, many friends seem to have doubts in their hearts. Can this ordinary gasoline and ethanol gasoline be mixed? Will ethanol gasoline corrode the engine?
What is ethanol gasoline?
Ethanol is actually what we commonly call alcohol. Ethanol gasoline is a kind of automobile fuel formed by mixing denatured fuel ethanol and gasoline in a certain proportion. In popular parlance, it is to add 10% biofuel ethanol to gasoline. When you see a gasoline label with an E in front of it at a gas station, it is ethanol gasoline, such as E92#, E95# and E98#.
Automobile ethanol gasoline refers to a new generation of clean and environment-friendly automobile fuel which is mixed with a certain volume ratio (tentatively set at 10% in China) in special gasoline component oil without methyl tert-butyl ether (MTBE) and oxygen additives, and is prepared by the designated automobile ethanol gasoline blending center according to the quality requirements of national standard GB18351—2017 through a specific process.
Can regular gasoline and ethanol gasoline be mixed?
Ethanol gasoline and ordinary gasoline can be mixed.
It is no problem to mix it occasionally, just like a person who often drinks boiled water and drinks occasionally. Everyone can rest assured that although it will increase fuel consumption, it will not cause too much harm to the car, only a slight impact.
One problem is that ethanol has good solubility, which may turn up the accumulated "sludge" in the fuel tank. This friend needs to pay attention when mixing.
The mixture of the two will not harm the automobile power system.
According to the research report of Geely Automobile Technology Center and Changsha University of Science and Technology, "Study on Emission Characteristics of Ethanol-Gasoline Blends", it is mentioned that the engine can work normally with different proportions of ethanol-gasoline blends without any parameter adjustment, without any adverse effects. Therefore, there is no need to worry that mixed gasoline will harm the automobile power system.
The vehicle emission index is also within a reasonable range.
The index of NOx (nitrogen oxide) in automobile exhaust will fluctuate to some extent, but it is also within a reasonable range. Therefore, there is no need to worry that mixed gasoline will harm the three-way catalyst.
Will ethanol gasoline corrode the engine?
Similar problems did occur at the beginning of the trial. Because alcohol is a common solvent in industry, it corrodes metal materials and swells rubber.
Alcohol corrodes metals and swells rubber.
Experiments show that alcohol mainly corrodes nonferrous metals, for example, copper, such as copper and brass, is the most serious corrosion, but it does not corrode ferrous metals or colorless metals. The swelling of rubber is mainly concentrated on natural rubber products, but not on chemical rubber.
Later, in order to solve the corrosion of non-ferrous metals, an additive was added to ethanol gasoline. Now the manufacturers have also considered the problem of ethanol gasoline, and have also strengthened the engine to improve the tolerance. So now there is basically no such thing as ethanol gasoline corroding the engine.
However, there is no very effective way to solve the swelling of rubber, so those natural rubber parts in the oil circuit are easily affected.
What’s the difference between regular gasoline and ethanol gasoline? What are their characteristics?
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