What grade of gasoline should the Land Cruiser use?
2 Answers
The Land Cruiser is best suited for 95-octane gasoline, as this allows the engine to perform better and extends its service life. However, in special circumstances, 92-octane gasoline can also be used. Determining factors for gasoline selection in cars: The grade of gasoline a car should use depends on the engine's compression ratio. Generally, engines with a compression ratio above 10 should use 95-octane gasoline, those with a compression ratio between 9-10 can use either 92 or 95-octane gasoline, and those with a compression ratio below 9 can use 92-octane gasoline. Definition of gasoline octane ratings: Gasoline octane ratings represent the ratio of the actual gasoline's anti-knock properties to those of standard gasoline. The higher the octane rating, the stronger the anti-knock performance. Standard gasoline is composed of isooctane and n-heptane. Higher octane ratings are not necessarily better; the appropriate gasoline grade should be selected based on the engine's compression ratio.
I've been driving a Land Cruiser for several years, and based on my experience, it's usually best to use 95-octane gasoline. This model has a high engine compression ratio, and using 95-octane fuel makes it run smoother, reducing noise and the risk of knocking. The new car manual recommends using 95-octane fuel—never use 92-octane, as it could damage the engine or reduce performance. During long trips, I've tried different octane levels, and 95-octane fuel is noticeably more durable, especially in mountainous areas or hot weather, thanks to its better heat resistance. It's important to develop the habit of regularly checking fuel quality to ensure you're always using the right type.
