What is the difference between No. 90 gasoline and No. 93 gasoline Is a good car plus 90 the same as

Gasoline marking: It is the ratio of the anti-knock resistance of actual gasoline to the anti-knock resistance of standard gasoline. Standard gasoline is composed of isooctane and n-heptane.

Isooctane has good knock resistance, and its octane number is set at 100; N-heptane has poor knock resistance, and is prone to detonation on gasoline engines, and its octane number is set at 0. If the gasoline is marked 90, it means that the gasoline of this grade has the same anti-knock properties as standard gasoline containing 90% isooctane and 10% n-heptane.

No. 93 oil is 5% more expensive than No. 90 oil, but the energy consumption is also about 5% smaller, and the amount of fuel consumed per 100 kilometers is theoretically equal. However, considering that the No. 93 oil matching high compression ratio engine with No. 90 oil will occur secondary combustion and incomplete combustion, which will lose an additional 5%-8% of the power, and then consider a series of consequences such as increased maintenance costs, reduced vehicle condition, and reduced life caused to the vehicle, the cost of downgrading the oil will go in.

It is mainly determined according to the compression ratio and anti-riot resistance of the car engine, and the EFI engine basically uses 93, and can not add 90.

These two gasolines have different octane numbers. No. 92 gasoline has a higher octane number and better stability.

There is a difference in the octane number of different grades of gasoline.

Some cars require 92 gasoline for their engines and some cars need 95 gasoline for their engines.

If the octane number of the gasoline used is too low, the engine may knock when it is working.

Detonation engines are an abnormal combustion phenomenon.

When the piston is in the compression stroke, the piston runs upwards to compress the combustible mixture, at which point the temperature and pressure of the combustible mixture will increase.

If the gasoline does not have good anti-knock properties, the combustible mixture will burn before the spark plug ignites, which is detonation. 、

Knocking is harmful to the engine. Severe knocks can even cause the connecting rod to deform or the piston**.

Generally, 92 gasoline is enough for a family car with a naturally aspirated engine, 95 gasoline for a family car with a turbocharged engine, and 98 gasoline for a high-performance car.

When you usually use the car, you must maintain it on time. When maintaining your car, be sure to use ** oil and accessories.

Millions of car purchase subsidies.

The difference between 90 gasoline and 92 gasoline is that the octane number is different, and the octane number of 92 gasoline is higher, and the stability of this gasoline is also better. There is a difference in octane number between different grades of gasoline.

Some cars have engines that require 92 gasoline, and some cars have engines that require 95 gasoline. If the octane number of the gasoline used is too low, the engine is likely to detonate while working. Detonation is an abnormal combustion phenomenon in the engine.

When the piston is in the compression stroke, the piston is running upwards to compress the combustible mixture, at which point the temperature and pressure of the combustible mixture rise.

If the anti-knock property of gasoline is not good, the combustible mixture will burn in advance before the spark plug is ignited, which is detonation. Knocking is harmful to the engine, and severe knocking can even cause the connecting rod to deform or the piston to burst. Generally, family cars with naturally aspirated engines can use 92 gasoline, and family cars with turbocharged engines are fine.

95 gasoline is fine, and high-performance models need 98 gasoline. (Photo by Li Linwei) @2019

The difference between gasoline and gasoline 95:1.

2.There are grades of gasoline currently available on the market.

3.These numbers represent the octane number of gasoline, that is, the knock resistance of gasoline, regardless of the cleanliness of gasoline; 2.The so-called "high-grade gasoline is cleaner" is completely misleading.

4.In fact, No. 93 gasoline is similar to No. 95 gasoline, which can be added according to the recommended instructions above; 3.Refueling according to the compression ratio of the engine or the requirements of the car instruction manual is more scientific and economical, and can give full play to the efficiency of the engine.

The numbers 92 and 93 represent the octane number of gasoline, that is, the anti-knock resistance of gasoline, which is suitable for mid-range cars (that is, the compression ratio is relatively low), and high-end cars generally choose gasoline with higher grades.

1. Gasoline octane number is different, 92 octane number 92 and 93 gasoline are gasoline with octane number 93.

Gasoline is the fifth stage of the national standard gasoline. No. 93 is the old grade of gasoline.

The most significant change between gasoline and gasoline 93 is that the sulphur limit has been lowered from 50 mg/kg to 10 mg/kg and the manganese limit has been lowered from grams per litre to grams per litre.