Rick's Free Auto Repair Advice

Posts Tagged: premium gas last longer

Premium gas lasts longer — myth or fact?

It’s not universally true that premium gas lasts longer than regular gas Most regular gasoline contains ethanol. But some premium gas also contains ethanol. Ethanol can be used to increase the octane level of fuel. Some gas stations do sell premium fuel with ethanol. So the question of whether premium gas lasts longer than regular comes down to whether the premium gas at that particular gas station contains ethanol. If that premium gas contains ethanol, it has the same shelf life as regular gas with ethanol. Why ethanol shortens the … Read More


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