E15 Fuel: Not All Engines Are Ready for It
TL;DR
The article explains that EPA waivers allow E15 (15% ethanol) in some newer vehicles, but many manufacturers do not authorize it for older models and using it in unsupported engines can cause rubber, plastic, and aluminum damage, water-induced fuel separation, and reduced octane and efficiency. It also notes that E15 is illegal for older engines and non-eligible equipment, may yield worse mileage due to ethanol’s lower density, and that the production and environmental claims around ethanol are not straightforward. Always verify manufacturer approval before refueling with E15.
- As E15 Gas Becomes More Common, Remember That It's Terrible For These Engines Jalopnik
- Why Opting For EPA’s New E15 Fuel May Not Be a Great Idea For Your Vehicle Newsweek
- EPA’s Cheaper E15 Gas Plan Could Cost You More Than You Bargained For Autoblog
- EPA issues temporary waiver allowing E15 gasoline sales amid fuel supply concerns Stuttgart Daily Leader
- New Cheaper Fuel Hits US Pumps On May 1 — But Millions Vehicles Cannot Use It International Business Times UK
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