What grade of gasoline should the Honda Elysion use?
2 Answers
Honda Elysion should use 92-octane gasoline, as this grade is recommended in the vehicle's official user manual. In addition to checking the appropriate gasoline grade in the user manual, you can also find it indicated on the fuel tank cap of the Honda Elysion. Generally, the gasoline grade can also be determined based on the engine's compression ratio. Vehicles with an engine compression ratio between 8.6-9.9 should use 92-octane gasoline, those between 10.0-11.5 should use 95-octane, and if the compression ratio is higher, 98-octane is recommended. However, with the use of some new technologies, the gasoline grade cannot be solely determined by the compression ratio. High compression ratios can also be adjusted to use lower-grade gasoline because, apart from the compression ratio, other factors such as ignition timing, turbocharging technology, and Atkinson cycle technology also play a role. Generally, the higher the gasoline grade, the higher the octane number and the better the anti-knock performance. 92-octane gasoline contains 92% isooctane and 8% n-heptane, while 95-octane gasoline contains 95% isooctane and 5% n-heptane. If the Honda Elysion occasionally uses the wrong gasoline grade, simply switch back to the correct grade after consumption. However, long-term use of the wrong gasoline grade can have the following effects: For vehicles recommended to use low-grade gasoline, using high-grade gasoline will not cause damage, but the increase in octane number will alter the fuel's ignition point, leading to delayed combustion in the engine. This means both the engine's power output and thermal efficiency will decrease, resulting in poorer performance. For vehicles recommended to use high-grade gasoline, using low-grade gasoline can cause engine knocking. Because the octane number is too low, the gasoline's ignition point decreases, causing it to ignite prematurely during the compression stroke. If combustion occurs before the spark plug fires during the compression stroke, resistance will arise in the upward stroke. This resistance makes the engine run very unstably. If the knocking is imperceptible, it only increases noise without significant damage to the engine. However, noticeable knocking indicates severe engine conditions, affecting not only driving stability but also causing abnormal wear on pistons and cylinders, and in severe cases, cylinder scoring.
I've been driving a Honda Elysion for several years and always use 92-octane gasoline, mainly because the car's engine is designed for this grade, and it works perfectly fine. The engine doesn't experience knocking, and the power output remains smooth. The official manual recommends using 92-octane or higher-grade gasoline, so there's no need to opt for the more expensive 95-octane unless you frequently drive on highways or mountainous roads where stronger power is needed. Just be careful not to use a lower grade than 92, as it might damage the engine, leading to increased noise and higher fuel consumption. I always go to reputable gas stations and periodically check the fuel system after refueling to avoid impurities affecting performance. Once you develop these habits, maintaining the car becomes much easier and saves a lot of hassle.
