Is it better to use 92-octane gasoline for the 12th-generation Crown?
2 Answers
It is not advisable to use 92-octane gasoline for the 12th-generation Crown. It requires 95-octane gasoline, as both its 2.5L naturally aspirated engine and 2.0L turbocharged engine are designed for 95-octane fuel. Prolonged use of 92-octane gasoline may affect the engine's normal operation. The 12th-generation Crown features a double-wishbone independent front suspension and a multi-link independent rear suspension. It is equipped with a 2.0L turbocharged engine that delivers a maximum horsepower of 235 PS, a maximum power output of 173 kW, and a peak torque of 350 Nm, paired with an 8-speed automatic transmission.
While researching fuel issues recently, I came across data on the 12th-generation Crown. Although the manual states that 92-octane fuel is acceptable, the 3.0L engine in the older Crown models has a relatively high compression ratio, making 95-octane a better match. I once used 92-octane on a long trip and noticed a significant increase in engine noise. After switching to 95, the throttle response became smoother, and carbon buildup issues improved somewhat. Considering the current minimal price difference, I recommend using higher-octane fuel whenever possible, especially for vehicles over ten years old, as engine components need extra care. If you absolutely can't find a 95-octane station, using 92 temporarily is fine, but remember to add a fuel additive later to neutralize the effects.
