On a road trip, your car is low on fuel and you pull into an unfamiliar gas station. The pumps are labeled "E10", "E85", and "Diesel", but you just want regular unleaded. Which is safest for your engine?
Answer E10, because it only contains 10% ethanol.
Most gasoline today is an E10 blend, meaning it contains up to 10% ethanol. Up to an E15 blend is generally considered safe for most vehicles, although a 15% ethanol blend can cause engine damage on some vehicles not built for it.
Asked by Dan Henry · Last updated 5 years ago · 249.1K views
