Can You Use 95 Octane Oil After Using 92 Octane Oil in a Car?
2 Answers
It is possible to use 95 octane oil after using 92 octane oil in a car, but long-term use may affect the lifespan of the car's ignition system, fuel injectors, and spark plugs, and the fuel quality cannot be guaranteed. Engine oil, also known as engine lubricant, serves to lubricate and reduce friction in the engine, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption. Engine oils are categorized by quality grades: 1. Diesel engine lubricants are selected based on the combined mechanical and thermal loads of the car engine and the severity of engine operating conditions; 2. Gasoline engine oils are chosen based on the severity of engine operating conditions, additional equipment in the intake and exhaust systems, and the production year.
I've been driving for seven or eight years, and this kind of thing happens often. My car usually takes 92-octane gasoline—it's cheap and economical. Once, when the gas station ran out of 92, I filled up with 95 instead. I felt the car accelerated more smoothly, and the engine noise was a bit quieter. I asked a mechanic friend, and he said 95-octane has a higher octane rating and better anti-knock performance, making it more suitable for high-speed driving or climbing hills. However, my car's manual recommends 92-octane, so using a higher grade isn't a problem—it just costs more. A full tank of 95 costs dozens of yuan extra, and while fuel efficiency might be slightly better, the savings don’t make up for the price difference. Nowadays, I occasionally treat myself to 95 for fun, but I stick with 92 most of the time—it’s worry-free and budget-friendly. Just remember, the engine can adapt, but don’t switch back and forth too frequently.
