How effective are ethanol blend fuel and low emission lube oils at reducing emissions?
Of the fuel blends that had been tested as of 2000, ten percent ethanol blend showed the greatest promise for reducing emissions. The best choice of lubricant was less cut-and-dried, but lubricants were shown to have a real impact. Ethanol blend and low emission lube oils in two-stroke engines have been shown to reduce emissions of carbon monoxide by 7 to 11 percent, particulate matter by 25 to 70 percent, and hydrocarbons by 16 to 38 percent. Use of 10 percent ethanol blend requires no engine modifications or adjustments.
