Does Using Higher Octane Gasoline Improve Engine Performance?

[MacReese]

Using higher octane gasoline does not necessarily improve a car's performance. The reasons are as follows: 1. The octane rating of gasoline is determined by the ratio of isooctane to n-heptane in the fuel. 2. Isooctane proportion in fuel: Generally, household cars typically use 92 or 95 octane fuel. In 92 octane fuel, isooctane accounts for about 92% of the rating, while n-heptane makes up about 8%. In 95 octane fuel, isooctane accounts for about 95% of the rating, with n-heptane at about 5%. 3. Brief introduction to fuel usage: A higher octane rating indicates better anti-knock performance of the fuel, but it does not mean that it will enhance the car's power. When refueling, it is necessary to choose based on the type of engine, specifically the compression ratio. Normally, naturally aspirated engines require 92 octane gasoline, while turbocharged engines need 95 octane fuel.