Unleaded 88/E15, also known as eco unleaded gas, is a blend of 15% ethanol and 85% gasoline. It is a lower-cost fuel that burns cleaner than gasoline and is more environmentally friendly. The higher octane of E15 reduces engine knock and promotes greater overall efficiency and power. Unleaded 88/E15 has been approved by the U.S. Environmental Protection Agency for use in all 2001 and newer cars, trucks, and SUVs. These vehicles make up more than 90% of the vehicles on the road today, meaning the majority of drivers can take advantage of this renewable fuel.

Unleaded 88 has undergone more testing than any other fuel in history, and research by the U.S. Department of Energy concluded that there were no significant changes in vehicle drivability as ethanol content increased. However, E15 should not be used in motorcycles, heavy-duty trucks, or non-traditional vehicles like snowmobiles or lawn mowers. Experts say that unleaded 88 may get slightly lower gas mileage, but for most drivers, it will not be noticeable in the short term.

In summary, eco unleaded gas is a blend of 15% ethanol and 85% gasoline that is more environmentally friendly and lower-cost than gasoline. It has been approved by the U.S. Environmental Protection Agency for use in all 2001 and newer cars, trucks, and SUVs. However, it should not be used in motorcycles, heavy-duty trucks, or non-traditional vehicles like snowmobiles or lawn mowers.