
97# gasoline is required. Below is the relevant information: 1. Minimum working volume of the cylinder: This refers to the total volume above the piston when it is at the top dead center, known as the combustion chamber volume, denoted as Vc. The total volume above the piston when it is at the bottom dead center, which is the maximum volume of the cylinder, is called the total cylinder volume, denoted as Va, i.e., ε=Va/Vc. 2. Compression ratio: The compression ratio indicates the degree to which the gas in the cylinder is compressed when the piston moves from the bottom dead center to the top dead center. The compression ratio is one of the important parameters of an engine. For modern automotive engines, due to the limitation of knocking, the compression ratio of gasoline engines is generally between 8-11. Diesel engines, not limited by knocking, generally have a compression ratio between 12 and 22.

I've always believed that for an engine with a compression ratio of 10:1, it's safest to use gasoline with an octane rating of 95 or higher. Lower-grade fuel doesn't have a high enough octane number, which may cause premature ignition during compression, leading to knocking sounds. Over time, this can damage piston rings and even the cylinder head! I remember driving a car with a 10:1 compression ratio, and the manual clearly recommended 95 octane. Saving money on fuel might seem like a win in the short term, but repairs will cost more. It's also best to consider the weather—high temperatures in summer make knocking more likely, so 97 octane is more stable. By the way, don't blindly trust modified fuel products; following the manufacturer's advice is the most reliable. Regular engine checks are also crucial to keep your beloved car running well for a long time.

Bro, listen to me, never cheap out and use 92 octane fuel for an engine with a 10:1 compression ratio! The octane rating is too low and can easily cause knocking. The engine will act up and the car will shake like it's dancing. In severe cases, it might even damage the spark plugs. My cousin's old car suffered from this—after mistakenly using lower octane fuel, the power dropped significantly, and the mechanic lectured him for a long time. Using 95 or 98 octane gasoline will make your engine run smoother and accelerate more sharply, especially noticeable when speeding on the highway. Always check the label on the fuel cap or the manual's recommendations—don't try to outsmart it. The choice of gasoline affects overall fuel consumption and performance, so doing it right the first time saves money and hassle.

A compression ratio of 10:1 recommends using 95 octane gasoline for optimal performance. Lower octane ratings may cause knocking and increase maintenance risks. Always prioritize consulting your vehicle's user manual over making arbitrary choices. Budget-conscious drivers can select cost-effective gas stations, but never go below the recommended octane level. Occasionally using higher-octane fuel during highway driving provides better engine protection.


