What is the difference between 98 and 95 gasoline?
2 Answers
Here are the differences between 98 and 95 gasoline: 1. Different octane numbers. The grade only indicates the octane number of gasoline. The octane number of gasoline is determined by using isooctane and n-heptane as standard fuels, making the detonation intensity they produce the same as that of the sample. The volume percentage of isooctane in the standard fuel is the octane number of the sample. 95 gasoline: 95 gasoline is 95% isooctane and 3% n-heptane. 98 gasoline: 98 gasoline is a mixture of 98% isooctane and 2% n-heptane. 2. Different anti-knock combustion capabilities. The higher the octane number, the better the anti-knock combustion capability. 95 gasoline: The anti-knock combustion capability is average among the three types of gasoline. 98 gasoline: Compared with the above two types of gasoline, 98 gasoline has higher anti-knock performance and power. Additional information: 1. The formulation of the national standard for phase V vehicle gasoline not only considers the urgent requirements for air pollution prevention and air quality improvement in China at present and in the future but also takes into account the current production and use of vehicle gasoline products in China, as well as the technical transformation needs of oil product production enterprises and the requirements of vehicle emission control technologies. The main indicators are equivalent to the current European standard levels, meeting the requirements of China's phase V gasoline vehicle pollutant emission standards. 2. The implementation of the standard will help promote the overall improvement of the quality of vehicle gasoline in China, reduce the emission of pollutants from motor vehicles, and reduce the emission of nitrogen oxides and particulate matter from new vehicles by 25% and 80% respectively. The overall emission of in-use vehicles can be reduced by 10% to 15%. This standard is of great significance for protecting the environment and improving air quality.
Friends often come to me to talk about cars. The key difference between 98 and 95 gasoline lies in the octane rating—98 has a higher octane and better anti-knock performance, making it suitable for high-performance engines. For example, turbocharged cars run more smoothly on 98, reducing knocking sounds and ensuring smoother acceleration with quicker response. Regular cars can use 95 to save costs without issues. Never mix or misuse them: if a car requires 98 but uses 95, it may cause engine shaking and damage components; the reverse is just a waste of money with no benefit. For daily maintenance, always follow the fuel grade specified in the owner’s manual to avoid costly repairs later. Additionally, fuel quality significantly impacts durability, so choose reputable gas stations to ensure reliable quality.
