What is the ratio of two-stroke gasoline engine oil to gasoline?
2 Answers
The ratio of two-stroke gasoline engine oil to gasoline is 25:1 to 50:1. The following is a related introduction to gasoline engines: 1. Composition: A gasoline engine is an internal combustion engine that uses gasoline as fuel and is ignited by an electric spark. It generally adopts a reciprocating piston structure and consists of the main body, crank linkage mechanism, air distribution system, fuel supply system, lubrication system, and ignition system. 2. Advantages: Gasoline engines are lightweight, have low manufacturing costs, produce less noise, and have better cold-start performance. Gasoline engines are lighter than diesel engines, have lower manufacturing costs, produce less noise, and have better cold-start performance, but they have lower thermal efficiency and higher fuel consumption rates.
I've been using two-stroke equipment for many years, like chainsaws and motorcycles. The most common oil-to-gas ratio is 40:1, which means adding 1 part oil to every 40 parts gasoline. In terms of measuring tools, that's 125 milliliters of oil for every 5 liters of gasoline. A mixture that's too lean can cause increased engine wear and excessive piston friction, while a mixture that's too rich can clog the exhaust pipe or lead to excessive carbon buildup, resulting in black smoke that affects performance. I always start by taking a clean plastic container, pouring in the gasoline, then adding the oil and shaking it thoroughly to ensure a uniform mixture before pouring it into the fuel tank. This method is both simple and safe—never mix directly in the fuel tank, as it's easy to make mistakes. It's important to buy dedicated two-stroke oil, as regular oil doesn't burn completely and can shorten the machine's lifespan with long-term use. For example, with my old equipment, it took two trial-and-error attempts before I found the manual-recommended ratio, saving me a lot on repair costs.
