Can You Add 92 Gasoline When 95 Gasoline Is Not Used Up?
2 Answers
You can add 92 gasoline when 95 gasoline is not used up. There is no adverse effect on the car and the engine itself, but due to the insufficiently high design compression ratio, the characteristics of 95 gasoline cannot be fully utilized, leading to "delayed combustion" and increased fuel consumption. Below is extended information about gasoline: 1. The fundamental difference between 95 gasoline and 92 gasoline lies in their different octane values and the different anti-knock agents added. 95 gasoline has a slightly higher proportion of anti-knock agents compared to 92 gasoline. 2. The quality of the two types of gasoline is exactly the same, and there is no difference in cleanliness or other aspects. The only difference is the amount of anti-knock agents added, designed to meet the different anti-knock requirements of engines with varying compression ratios.
From my experience of driving for over a decade, occasionally adding 92 gasoline when there's a little 95 left in the tank isn't a big deal, but it's not a long-term solution. Mixing fuels with different octane ratings may cause slight engine knocking, which feels like the car is shaking, and fuel consumption might also increase. My old Honda once had this issue—it ran a bit rough but didn't damage the engine. However, long-term mixing is risky and could lead to component wear or trigger warning lights. I recommend sticking to one type of fuel whenever possible. If you must mix, keep it minimal—no more than half a tank. During your next maintenance check, remember to inspect the ignition system to ensure everything is in good condition. Safe driving is the top priority, as small oversights can lead to big troubles.
