What grade of gasoline should a Land Cruiser use?
2 Answers
It is best to use 95-octane gasoline for the Land Cruiser, as this enables the engine to perform better and also extends its service life. Definition of gasoline grades: 92-octane gasoline contains 92% isooctane, with the remainder being n-heptane. Similarly, 95-octane gasoline contains 95% isooctane. There is no superiority or inferiority between these two gasoline grades; they are simply suited for engines with different compression ratios. Anti-knock properties of gasoline grades: Isooctane is related to anti-knock properties, while n-heptane affects the combustion speed. 92-octane gasoline has relatively weaker anti-knock properties, whereas 95-octane gasoline has higher anti-knock properties and a slower combustion speed.
I've been driving a Land Cruiser for over a decade. This vehicle's engine was designed for high-intensity off-roading with a relatively high compression ratio, and it's generally recommended to use 95-octane fuel for optimal performance. Initially, I tried using 92-octane to save some money, but I noticed a significant drop in power and heard knocking sounds when climbing hills. Later, a mechanic friend explained that lower-octane fuel can cause abnormal combustion, potentially damaging the engine over time. Now I consistently use 95-octane. Although each fill-up costs a bit more, the engine runs smoothly, fuel consumption remains stable, and I've avoided potential repair costs. I prioritize major brand gas stations to ensure fuel quality and regularly check the fuel filter.
