What does gasoline 92 and 95 mean?
2 Answers
92 gasoline refers to gasoline with an octane rating of 92, while 95 gasoline consists of 95% isooctane and 5% n-heptane. Understanding gasoline grades: The main difference between different gasoline grades lies in their anti-knock performance, which is an important indicator for measuring fuel quality. 92 gasoline is suitable for mid-range vehicles (with lower compression ratios), while 95 gasoline, composed of 95% isooctane and 5% n-heptane, is recommended for engines with higher compression ratios. 98 gasoline has an octane rating equivalent to a mixture of 98% isooctane and 2% n-heptane. The advantages of 98 gasoline are "two highs and two lows": higher anti-knock performance and power output, along with lower harmful substances in the gasoline and reduced exhaust pollution. Precautions for refueling: Do not switch gasoline grades arbitrarily. Switching to a lower grade may cause premature combustion, leading to engine knocking. Incomplete combustion can also increase carbon deposits, clogging ducts and injectors, resulting in reduced vehicle power and increased fuel consumption.
92 and 95 gasoline refer to octane ratings, where the numbers indicate the fuel's anti-knock performance. 92 has ordinary anti-knock properties and is suitable for most small or economy cars with low compression ratios. It's cheaper to use, and from my experience driving family cars, sticking with 92 can save a lot on fuel costs. However, it's essential to check the vehicle manual, as some models like older sedans only recommend this grade. Using 95 unnecessarily could waste money and affect exhaust emissions. When fuel prices fluctuate, choosing 92 is more economical. If the engine has a low compression ratio, using higher-grade fuel offers no benefit. It's best to regularly inspect the fuel system during maintenance to prevent issues.
