How Many Months Must a Full Tank of Gasoline Be Used Up Within at Most?
2 Answers
A full tank of gasoline must be used up within three months at most. Here are the specific details: 1. Time: The shelf life of gasoline in a car's fuel tank is three months. 2. Reason: Due to gasoline's lower density compared to diesel, lower ignition point than diesel, and higher volatility than diesel, its shelf life is shorter than that of diesel. Here is some additional information: 1. Introduction and Function: Gasoline is a volatile, flammable hydrocarbon mixture liquid distilled and cracked from petroleum, used as fuel. 2. Main Components: The main components are C5 to C12 aliphatic hydrocarbons and cycloalkanes, along with a certain amount of aromatic hydrocarbons. 3. Classification: Gasoline has a high octane number (anti-knock combustion performance) and is classified by octane ratings such as 89, 90, 92, 93, 95, 97, and 98. Starting from January 2012, the gasoline grades 90, 93, and 97 were revised to 89, 92, and 95.
Having driven for over a decade, I've found that fuel in the tank shouldn't stay longer than six months. Once when I parked my car in an underground garage for four months during a business trip, it struggled to start upon return. The mechanic said the fuel had deteriorated and gummed up. Gasoline is particularly prone to oxidation, and over time it forms sediments that can clog the fuel pump filter and damage fuel injectors. Especially with the ethanol-blended gasoline used at many gas stations nowadays, the shelf life is even shorter—lasting at most three months. If you don't drive your car often, I recommend filling only half a tank each time and using it up within three months. For fuel older than six months, it's better to drain it and replace with fresh fuel to avoid costly repairs later.
