South Dakota's flexible fuel vehicles have switched to a lower ethanol blend after preliminary tests indicated that E-85 wasn't saving any money.
State pumps in Rapid City, Sioux Falls and Pierre that were carrying the 85 percent gas-ethanol blend are now dispensing E-30. Tests on the 30 percent blend will run through the end of the year.
Although E-85 was 23 cents per gallon cheaper than the standard 10 percent ethanol blend, tests showed that the 23 percent decrease in gas mileage negated the cost savings.
No mention of the decrease in power and efficiency.