Should the Maxus G10 use 92 or 95 octane gasoline?
2 Answers
The Maxus G10 should use 92 octane gasoline, as this fuel grade is recommended in the vehicle's official user manual. In addition to checking the appropriate gasoline grade in the user manual, the Maxus G10 also indicates it on the fuel tank cap. The required gasoline grade can usually be determined by 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. If the compression ratio is even higher, 98 octane gasoline is recommended. However, with the application of new technologies, the compression ratio alone cannot determine the required gasoline grade, as high compression ratio engines can also be tuned to use lower octane gasoline. 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 Maxus G10 occasionally uses the wrong gasoline grade, simply switch back to the correct grade after the tank is empty. However, long-term use of the wrong gasoline grade can have the following effects: For vehicles recommended to use lower octane gasoline, using a higher octane grade will not cause damage, but the increased octane number may alter the fuel's ignition point, leading to delayed combustion in the engine. This reduces the engine's power output and thermal efficiency, resulting in poorer performance. For vehicles recommended to use higher octane gasoline, using a lower octane grade can cause engine knocking. The significantly lower octane number reduces the fuel's ignition point, causing premature ignition during the compression stroke. If combustion occurs before the spark plug ignites, resistance will arise during the upward stroke. This resistance makes the engine run very unstably. Mild knocking may only increase noise without obvious engine damage, but severe knocking indicates serious engine conditions. The vibrations not only affect driving stability but also cause abnormal wear on the piston and cylinder, potentially leading to cylinder scoring in severe cases.
As an owner of the Maxus G10, I've learned a lot from the vehicle manual. It explicitly recommends using 95-octane gasoline because the higher octane rating is better suited for this MPV's powertrain, reducing the risk of engine knocking and protecting internal components. After driving for a while, I found that using 92-octane fuel saves money in the short term, but it results in weaker power and slightly higher fuel consumption. In the long run, it may lead to piston ring damage or increased carbon deposits, which are costly to repair. It's advisable to regularly check the condition of the spark plugs to match the fuel quality. Occasionally using fuel additives to clean the fuel system is also quite effective. In short, don't save small money at the expense of bigger issues—prioritizing 95-octane fuel is a safer and more reliable choice.
