Can the Lamando use 92 octane gasoline?

[McRobert]

According to the official vehicle manual recommendation, the Lamando should use 95 octane gasoline. In addition to checking the appropriate gasoline grade in the vehicle manual, you can also find it on the fuel tank cap, which will also be marked. Usually, 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, while those with a compression ratio between 10.0-11.5 should use 95 octane gasoline. However, with the use of some new technologies, the gasoline grade cannot be determined solely by the compression ratio. High compression ratio engines can also be tuned to use lower octane gasoline because, apart from the compression ratio, other factors such as ignition timing, turbocharging technology, and Atkinson cycle technology also play a role. Generally speaking, the higher the gasoline octane number, the higher the octane value 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 Lamando occasionally uses the wrong gasoline grade, simply switch back to the correct grade after use. However, long-term use of the wrong gasoline grade can have the following effects: For vehicles recommended to use lower octane gasoline, using higher octane gasoline will not cause damage, but the increase in octane value will change the fuel's ignition point, leading to delayed combustion in the engine. This means the engine's power output and thermal efficiency will decrease, resulting in poorer performance. For vehicles recommended to use higher octane gasoline, using lower octane gasoline can cause engine knocking. Because the octane value is too low, the gasoline's ignition point decreases, causing it to ignite prematurely during the compression stroke. If the fuel ignites before the spark plug fires during the compression stroke, resistance will occur during the upward stroke. This resistance will make the engine run very unstably. If the knocking is mild, it will only increase noise without significant damage to the engine. However, if the knocking is severe, it indicates that the engine's condition is very serious. The vibration not only affects driving stability but can also cause abnormal wear on the pistons and cylinders, and in severe cases, even cylinder scoring.

[Beth]

I'm quite familiar with the Lamando model and have extensive experience discussing cars. Generally speaking, using 92-octane gasoline is not recommended, especially since the Lamando's engine is designed with a high compression ratio. It's best to use 95-octane or higher. The manual clearly states the recommendation for 95-octane to ensure good anti-knock performance. If you use 92-octane, you might not notice any issues in the short term, but it can easily cause engine knocking, where the fuel ignites prematurely inside the engine, leading to vibrations and reduced power. Over time, this increases wear and tear, and engine repairs can be costly. I've driven similar models and tried using 92-octane once, which resulted in higher fuel consumption. A check at the service center revealed it nearly damaged some components. Safety first—don't skimp on fuel costs. Additionally, gasoline quality varies by region, and using the wrong type can affect your car's lifespan. It's safest to check the original manual or consult a 4S store to confirm and follow the recommended fuel grade.