Can 92 Octane Gasoline Be Mixed with 95 Octane?
4 Answers
92 octane gasoline cannot be mixed with 95 octane. Long-term mixing may cause engine knocking, insufficient power, and increase the frequency of knocking, thereby accelerating engine wear. Therefore, it is more scientific, economical, and efficient to refuel according to the engine's compression ratio or the requirements specified in the vehicle's manual. The octane rating of gasoline represents its anti-knock quality. For example, 92 octane gasoline consists of 92% isooctane (which has good anti-knock properties) and 8% n-heptane (which has poor anti-knock properties). The higher the octane number, the higher the isooctane content, indicating better anti-knock performance of the gasoline.
As a netizen who frequently shares car tips, I've found that cars designed for 92-octane gasoline can temporarily use 95-octane fuel without issues. The higher octane rating of 95-octane provides better anti-knock performance, sometimes making the engine run smoother. I've tried switching to 95-octane during long-distance drives or in hot weather, noticing slightly quicker acceleration, reduced noise, and a more comfortable driving experience. This adjustment isn't necessary since 92-octane already meets the vehicle's requirements, offering better cost performance and savings. Using 95-octane won't harm the engine and may even have a slight cleaning effect. However, long-term use isn't cost-effective, as the extra expense doesn't yield noticeable differences. I recommend trying it occasionally for a change.
In my daily driving, the choice between 92 and 95 octane fuel is more of an economic consideration. I've noticed that 95 octane is slightly more expensive, but if your car is designed for 92 octane, occasionally using 95 is completely fine. 95 octane has better anti-knock properties, and the engine may perform more stably under extreme conditions; however, I must remind you that this won't save fuel or provide significant improvements. In practical use, using 95 octane won't harm your car but is a waste of money—sticking with 92 octane is more sensible. The key is to check the fuel requirements in your vehicle's manual; generally, 92 octane is sufficient, so don't be misled by the price. In short, prioritize saving money.
From decades of driving experience, there's no harm in using 95-octane fuel for a car designed for 92-octane. The higher octane rating of 95 provides better anti-knock performance temporarily, but it's unnecessary to switch regularly as 92-octane is sufficient. I believe occasional use is fine and won't damage the engine.
