Can 98 and 95 Octane Gasoline Be Mixed Together?
3 Answers
No, they cannot be mixed. Mixing different octane gasoline can easily damage the car engine. Additionally, when selecting the gasoline octane rating, do not choose a rating lower than the manufacturer's specified standard, as this may lead to issues such as insufficient power and poor acceleration. Here are some relevant details: 1. Gasoline with different octane ratings has different levels of octane values. The higher the octane rating, the higher the octane value, and the better the anti-knock performance of the gasoline. 2. 95 octane gasoline indicates that it contains 95% octane, while 98 octane gasoline contains 98%. The type of fuel a car should use is determined by the compression ratio of the car's engine cylinder. Cars with a compression ratio between 8.5 and 9.5 generally use 92 or 95 octane gasoline; cars with a compression ratio greater than 9.5 should use 98 octane gasoline.
As someone who has driven many cars, I think mixing 98 and 95 octane gasoline is not reliable. The most direct issue is the difference in octane ratings. Mixing them will reduce the gasoline's anti-knock capability, making the car prone to knocking sounds during high-speed driving or climbing, and over time, it can damage engine components. For example, my old car once tried mixing fuels, and later it had trouble accelerating and consumed more fuel. Manufacturers usually recommend using a fixed octane rating to maintain the engine's optimal condition. In emergencies, occasionally using the wrong fuel might not cause major issues, but don't make it a habit. It's best to switch back to a single octane rating as soon as possible. Always check the car's manual for detailed fuel recommendations—don't overlook this small detail. Safe driving should always prioritize fuel compatibility.
I've been driving for over a decade and have encountered situations where I mixed 98 and 95 gasoline a few times. To be honest, short-term and small-scale mixing isn't a big issue – the car still runs fine, and the engine won't immediately fail. However, I genuinely don't recommend making it a habit, as it affects combustion efficiency, leading to reduced power and increased fuel consumption, like slower acceleration and higher costs. Long-term mixing can also cause carbon buildup, which is troublesome to clean. I advise fellow drivers to pay close attention to the fuel grade when refueling and not to mix fuels casually for convenience. If you do accidentally fill up with the wrong type, don't panic too much – just drive to a repair shop for a checkup to ensure everything's normal. Treat your car like a friend; even small things like fuel choice matter.
