Can Gasoline Still Be Used If It Gets Water in It?

2 Answers
VanJanelle
07/25/25 9:15pm
Here are detailed explanations on whether gasoline can still be used if it gets water in it: 1. Cannot be used: Gasoline with excessive water ingress cannot be used. If there is a significant amount of water, you can drain it out. Water and oil do not mix, so the oil will not deteriorate. 2. Can be used: If the amount of water is minimal and the fuel pump cannot draw in the water, it can be used temporarily. Below is additional information about gasoline: 1. Properties: Gasoline is a transparent, flammable liquid with a distillation range of 30°C to 220°C. 2. Composition: Its main components are C5–C12 aliphatic and cycloalkane hydrocarbons, along with a certain amount of aromatic hydrocarbons. Gasoline has a high octane rating and is graded by octane numbers such as 90, 93, 95, and 97.
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DelHector
08/11/25 10:12pm
Last time when I was getting my car repaired, an old-timer asked me about this—gasoline mixed with water is really unusable! Water and gasoline are like oil and water droplets in a pan; they just don’t mix. The water sinks to the bottom of the fuel tank, and if it gets pumped into the engine during startup, it can cause rust inside the cylinders. If the spark plugs get wet, they won’t ignite, and you’ll end up needing a tow for repairs. Always make sure the fuel cap is sealed properly when refueling—getting rainwater in there would be a real headache. If water has already gotten in, don’t risk starting the engine. Take it to a professional shop to drain the fuel completely and replace it with fresh gasoline, saving you thousands in potential engine overhaul costs later. I’ve seen plenty of cases where too much water renders the gasoline useless, causing the engine to knock loudly, and the repair costs are terrifying. Prevention is simple: regularly check the fuel tank and the sealing gasket around the fuel filler neck.
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