After mandating the sale of 15% ethanol gasoline — that can damage engines and lower fuel efficiency — the EPA is now going to require that you buy at least 4 gallons in order to reduce the damage.

How nice of them: After mandating the sale of 15% ethanol gasoline — which can damage engines and lower fuel efficiency — the EPA is now going to require that you buy at least 4 gallons when you fill your tank in order to reduce the damage.

The entire auto industry has made it very clear its opposition to 15% ethanol because that mixture is harmful to vehicle engines. So, does the EPA back off? No, it instead doubles down, increasing its regulatory control in a manner that is complex, unenforceable, and impractical.

And when this new regulation doesn’t work and vehicles begin to fail, don’t expect the EPA to pay for the repair. Instead, I expect we will soon have EPA regulators standing at every gas station, checking to make sure we use the right gasoline in the right amounts, ready to fine or arrest us if we dare to do something different.

EPA approves 15% ethanol gasoline despite the risk of engine damage

We’re here to help you: The EPA has approved a warning label for its approval of 15% ethanol gasoline.

EPA says tests show E15 won’t harm 2001 and newer vehicles, which have hoses and gaskets and seals specially designed to resist corrosive ethanol. But using E15 fuel in older vehicles or in power equipment such as mowers, chainsaws and boats, can cause damage and now is literally a federal offense.