Can I use 92# gasoline if the car is labeled for 95# gasoline?
2 Answers
95# gasoline cannot be directly replaced with 92# gasoline. Here are the relevant explanations: 1. Turbocharger: If the engine is equipped with a turbocharger, it is necessary to use gasoline with an octane rating of 95 or higher. 2. Naturally aspirated: Naturally aspirated engines can use gasoline with an octane rating of 92 or higher. Below is extended information on the differences between 95# and 92# gasoline: 1. Composition ratio: 95# gasoline contains 95% isooctane and 5% n-heptane; 92# gasoline contains 92% isooctane and 8% n-heptane. 2. Anti-knock performance: 95# gasoline has higher anti-knock performance; 92# gasoline has lower anti-knock performance.
I've heard many car owners discuss this. The sticker on the car body saying 'Use 95 gasoline' means the manufacturer recommends fuel with a higher octane rating. If you switch to 92, the high engine compression ratio can cause issues, like knocking—which sounds like engine pinging—or reduced power and increased fuel consumption. I've driven several cars myself and found that following the manual's instructions is best. The money saved on fuel isn't worth the potential repair costs. Modern engines might have sensors for adjustments, but using lower-octane fuel can cause carbon buildup and damage the engine, especially during long-distance driving. I recommend checking your car model's specifications or consulting a professional shop first—safety should always come first, don't take risks.
