Can 95 and 92 be mixed together?
2 Answers
95 and 92 cannot be mixed together. The gasoline grade is distinguished by the octane number. Gasoline with a higher octane number has better anti-knock performance, reducing the likelihood of engine knocking and improving engine power. Refueling precautions: 1. Use automotive gasoline; inappropriate fuel entering the fuel system may damage the fuel system and engine. 2. Do not use gasoline containing methanol or alcohol. 3. Avoid spilling fuel on the paint surface to prevent damage. 4. If the fuel tank door is frozen and cannot be opened, gently push or tap the fuel tank door to remove the ice and open it. 5. Prevent excessive fuel pressure from causing spraying. 6. Insert the fuel nozzle deep into the fuel tank to avoid fuel overflow or spillage, which could lead to fire and explosion. 7. Before opening the fuel filler cap or touching the fuel nozzle, touch the car body to discharge static electricity. Do not re-enter the vehicle while refueling to avoid generating static electricity.
I've also mixed 95 and 92 octane gasoline before. That time, the gas station ran out of 92, so I filled half a tank with 95. I felt the engine shaking slightly when driving, but there were no major issues. My friend, who is a mechanic, told me that long-term mixing might increase the risk of engine knocking because the octane ratings are different. 95 octane has better anti-knock properties and is suitable for high-performance engines, while 92 octane is cheaper but has different combustion characteristics. Occasionally mixing once shouldn't be a problem, but it's best to follow the car's manual—don't damage the engine just to save money. Think about it: if the car model recommends 95 octane but you often mix in 92, over time, the parts will wear out more, and repair costs will be higher—not worth the savings. So, my experience is that sticking to one type of fuel is more reassuring. If you want to save money, choose a car that runs on 92 octane or just use one type consistently.
