Bad for cars, boats, motorcycles — even lawnmowers.

The problems with the RFS are clear. E15 fuel poses a threat to the engines in tools and vehicles that millions of Americans use each day. Studies have shown that fuel with 15 percent ethanol (“E15”) can harm engines and fuel systems in cars, lawnmowers, leaf blowers, snowmobiles, and other gas-powered equipment. Boats aren’t safe either; E15 could lead to clogged carburetors and fuel filters. As a further hit to consumers, E15 would void many car warranties.