What do the 92, 95, and 98 services mean?
1 Answers
92 service refers to 92-octane gasoline, 95 service refers to 95-octane gasoline, and 98 service refers to 98-octane gasoline. 92 service: 92 service refers to 92-octane gasoline, which has an octane rating of 92 and contains 8% heptane. It is suitable for mid-range vehicles (those with relatively low compression ratios). 95 service: 95 service refers to 95-octane gasoline, which consists of 95% octane and 5% heptane. High-compression engines should use high-octane gasoline. Using low-octane gasoline in a high-compression engine can cause abnormal combustion, leading to knocking, increased fuel consumption, and reduced driving power. Of course, high-compression engines can also use lower-octane gasoline, but it is not advisable to choose gasoline solely based on compression ratio. Instead, follow the manufacturer's recommendations for fueling. 98 service: 98 service refers to 98-octane gasoline, which has an octane rating equivalent to a mixture of 98% isooctane and 2% heptane. The advantages of 98-octane gasoline are "two highs and two lows": higher anti-knock performance and power output, and lower harmful substances in the gasoline and lower exhaust emissions.