What Grade of Gasoline Should a Tank Use?
2 Answers
The Tank series requires a minimum of 92-grade fuel. For vehicles, the fuel grade recommended on the fuel tank cap should be followed, or a higher grade can be used, but using a lower grade is not advised. For example, a car that uses 92# can use 95#, but a car that requires 95# should not use 92#. Here are some details about gasoline: Differences between 92# and 95# gasoline: 92# gasoline has a much lower proportion of isooctane compared to 95# gasoline. The higher the grade, the higher the isooctane value. A higher proportion of isooctane improves the gasoline's anti-knock performance, which helps reduce carbon deposits after combustion. Anti-knock performance refers to the gasoline's ability to resist premature ignition during compression in the engine's combustion chamber. Poor anti-knock performance can lead to premature ignition, causing knocking. Gasoline with good anti-knock performance prevents this. Engines with higher compression ratios require gasoline with better anti-knock performance. To determine the appropriate gasoline grade for your car, refer to the vehicle's manual or the fuel tank cap for the manufacturer's recommendations. Consequences of mixing different gasoline grades: Using 92# gasoline in an engine designed for 95# can weaken anti-knock performance, potentially causing engine knocking and worsening carbon deposit issues. In severe cases, the engine may be damaged beyond repair, so using a lower grade is not recommended. Using a higher grade poses no operational issues and may even reduce carbon deposits, but it can lead to unnecessary economic waste.
As someone who frequently deals with engineering vehicles, I have to say that tanks are quite different from regular private cars. Military tanks are mostly diesel-powered, like the commonly seen Type 99 tank, which uses a high-power diesel engine. Diesel has higher energy density and greater torque, making it particularly suitable for the off-road needs of heavy equipment like tanks. Moreover, diesel is more stable in high-temperature environments, providing better battlefield safety. However, tanks don't refuel at ordinary gas stations like private cars do; the military has specialized fuel tankers for supply. It would be troublesome to fill a tank with gasoline—a diesel engine encountering gasoline would stall immediately and could damage the high-pressure fuel pump, with repair costs high enough to buy a new vehicle.
