Which Cars Require 98 Octane Gasoline?

[VanAdelyn]

Vehicles with a compression ratio of 10 or higher, sophisticated European luxury cars with complex electronic systems, high-performance sports cars, and vehicles with fuel tank caps labeled "Please use 95 octane or higher gasoline." Below are specific details about 98 octane gasoline: 1. Anti-knock Performance: 98 octane gasoline offers superior anti-knock properties. Since isooctane has better anti-knock characteristics while n-heptane performs poorly in this regard, higher octane ratings indicate better anti-knock performance. By extension, 98 octane gasoline means enhanced anti-knock capability. 2. High Combustion Value: 98 octane gasoline has a composition where the octane rating equals a mixture of 98% isooctane and 2% n-heptane. Engines with high compression ratios should use high-octane gasoline; otherwise, using low-octane fuel may cause abnormal combustion, leading to knocking, increased fuel consumption, and reduced driving performance. Compared to other gasoline grades, 98 octane gasoline provides stronger anti-knock performance, higher combustion value, and delivers more powerful engine output.