How to Check Gasoline Quality?
2 Answers
Gasoline quality can be checked using the following methods: 1. Observe engine performance and compare mileage changes. High-quality gasoline contains fewer impurities, resulting in smoother and more complete combustion after filtration. The engine runs quietly and smoothly without jerking. Since high-quality gasoline burns more completely than low-quality gasoline, vehicles using the same amount of high-quality gasoline will achieve longer mileage. 2. Listen to the engine sound. Poor-quality gasoline, due to impurities, makes the engine sound dull and causes noticeable vibrations, especially during uphill driving or acceleration. In contrast, good gasoline produces almost no vibration and very little noise. 3. Check the color and smell the odor. Visually, inferior gasoline appears cloudy and unclear, with suspended particles in the middle and sediment at the bottom. Observe the exhaust color; if it appears black or unusually white, it indicates low-quality gasoline. If these signs are hard to identify, try smelling the gasoline. Gently wave your hand over it; a pungent and unpleasant odor indicates poor-quality gasoline.
As a frequent long-distance driver, I have a simple method to check gasoline quality. Before refueling, I usually observe the color of the gasoline up close: clear and transparent oil indicates purity; if it appears yellowish or has turbidity, it may contain impurities. Then I take a sniff: normal gasoline has a slightly pungent odor; if it smells musty or is so pungent it makes you frown, it may be expired or adulterated with water. Sometimes I also use a small glass bottle to take a sample, add water, and shake it well; if it separates too quickly with sediment, the oil quality is not ideal. Don’t underestimate these checks—poor-quality fuel can cause engine shaking, power loss, or even damage spark plugs, leading to costly repairs. I recommend refueling only at reputable large gas stations and avoiding cheap roadside stalls to prevent problematic gasoline from affecting driving safety.
