Can the new Jetta SUV VS7 use 92 gasoline?
1 Answers
Jetta VS7 can use 92 gasoline, but it is recommended to use 95 gasoline, as 95 gasoline provides better protection for the engine. High-compression engines can also use low-grade gasoline, but choosing gasoline grades based solely on compression ratio is not advisable. It is best to follow the manufacturer's recommendations for refueling. Gasoline recommendations: 95 gasoline consists of 95% isooctane and 3% n-heptane. High-octane gasoline should be used in engines with high compression ratios. Using low-octane gasoline in high-compression engines can lead to abnormal combustion, causing knocking, increased fuel consumption, and reduced driving performance, making it suitable for high-end vehicles. 92 gasoline has an octane rating of 92 and consists of 8% n-heptane, making it suitable for mid-range vehicles. Gasoline grades are classified by octane rating, and the anti-knock performance of automotive gasoline is indicated by the octane number. The higher the octane number, the better the anti-knock performance. The anti-knock capability of gasoline is related to its chemical composition. Branched-chain alkanes, olefins, and aromatics generally have excellent anti-knock properties. Isooctane is assigned an octane number of 100, indicating good anti-knock performance, while n-heptane has an octane number of 0, indicating poor anti-knock performance. The octane rating of gasoline is measured by an octane testing machine. High-octane gasoline can meet the needs of high-compression gasoline engines. Higher compression ratios in gasoline engines result in higher thermal efficiency and fuel savings.
