Why Gas Stations Don't Sell Premixed Gas for 2-Cycle Engines Any More
For years, gas stations have sold premixed gas for 2-cycle engines, aiding consumers who needed to ensure the correct oil-to-fuel ratio. However, over time, the trend shifted, and today, most gas stations no longer sell premixed gas for 2-cycle engines. This article will explore the reasons behind this change and the implications for users of 2-cycle engines.
Market Demand
The demand for premixed gas for 2-cycle engines is relatively low compared to regular gasoline. Most consumers use 4-cycle engines, which do not require premixed fuel. Consequently, gas stations have shifted their focus to products with higher demand, such as regular gasoline and diesel fuel.
Storage and Handling
Handling and storing premixed fuel requires specific procedures to maintain the correct oil-to-gas ratio. This adds complexity and potential liability for gas stations. They prefer to sell standard fuels, which have fewer regulatory requirements and are easier to handle.
Shelf Life
Prepared premixed fuel typically has a shorter shelf life than regular gasoline due to the presence of oil. Over time, the oil can break down, leading to waste and financial loss for gas stations. This further discourages them from selling premixed gas.
Specialized Use
2-cycle engines are primarily used in specific applications such as chainsaws, lawn mowers, and other small engines. Gas stations may not consider it economically viable to stock premixed gas since their primary customers prefer regular fuel.
Regulatory Issues
Depending on local regulations, selling premixed fuel may involve additional compliance requirements. This can deter gas stations from offering premixed fuel, making it more efficient for them to sell regular fuel and rely on consumers to mix their own fuel at home or at specialty retailers.
Examples from Australia
Some Servo gas stations in Australia used to offer a two-stroke fuel pump, but several issues made it less efficient. For one, the low volume sold meant that large quantities of oil were kept in storage for long periods. This could lead to a stronger oil mix initially, but a weaker mix after the holding tank was refilled and stirred.
Another issue was the changing oil-to-fuel ratios in engines. In the 1950s and 1960s, a 25:1 mix was common. However, by the late 1980s and early 1990s, 40:1 and 50:1 mixes became more common, especially in larger outboard engines. Using a 25:1 mix in an engine designed for a 40:1 mix could result in fouled spark plugs and a leaner fuel mixture, which can affect engine performance.
As a result, consumers often turn to specialty retailers or small engine repair shops for premixed fuel. Alternatively, they mix their own fuel at home, using the correct ratio and giving the mixture a thorough mix.