Should Mitsubishi ASX use 5w30 or 5w40?

[EthanMarie]

Mitsubishi ASX can use either 5w30 or 5w40. Here is an introduction to gasoline-related content: 1. Refining method: Gasoline is produced by refining different gasoline components such as straight-run gasoline components, catalytic cracking gasoline components, and catalytic reforming gasoline components obtained from petroleum refining, and then blending them with high-octane components. 2. Main function: Gasoline is mainly used as fuel for spark-ignition internal combustion engines in automobiles. Below is extended information on the differences between 95# and 92# gasoline: 1. Composition ratio: 95# gasoline contains 95% isooctane and 5% n-heptane; 92# gasoline contains 92% isooctane and 8% n-heptane. 2. Anti-knock performance: 95# gasoline has high anti-knock performance; 92# gasoline has low anti-knock performance.