Is it better to use 92 or 95 octane fuel for the Highlander?
2 Answers
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To be honest, I've been driving a Highlander for several years. At first, I used 92-octane gasoline to save money, and it worked fine in the city without major issues. However, on highways or during hot weather, the engine occasionally shuddered, and I later learned from research that it was engine knocking, which damages the engine. After switching to 95-octane, the acceleration became noticeably smoother, with reduced noise, and while the mileage per fill-up was similar, the engine ran quieter. I often go on weekend road trips, and on uphill sections, the 95-octane fuel provided better responsiveness, protecting the engine's lifespan. The manual recommends using 95-octane, so I now stick with it—though it's more expensive per liter, fewer repairs mean long-term savings. Never mix octane ratings; consistently using one type helps the engine adapt. Remember, when the budget allows, prioritize 95, but 92 is fine for emergencies.
