Join Date: Mar 2016
Location: near Eugene, OR
AMA's website quotes an EPA response to its letter, saying that the 4-gallon minimum would apply to fewer than 1% of fueling stations, i.e., those that have pumps that dispense both E10 and E15, in order to prevent motorcycles and the like from getting E15 inadvertently. That makes it sound a little less onerous. Here's the quote:
Dispensing E10 in volumes less than 4 gallons from a pump that supplies E10 only is absolutely NOT a violation.
The excerpted portion you highlighted should refer only to the less than 1% of gas stations that have gasoline pumps that that dispense BOTH E10 and E15 from a single hose or nozzle. The 4 gallon fueling minimum for E10 is only required for these “co-dispensing pumps” and is there to protect consumers. The 4 gallon minimum ensures that engines, that are not allowed to use E15 (like those in motorcycles) do not inadvertently get too much ethanol in the tank. To comply with EPA regulations, most stations with co-dispensing pumps simply put up a sign that says the co-dispensing pump may only be used for passenger vehicles and separately offer a dedicated E10 pump for motorcycles and other engines that cannot use E15. Motorcyclists or other types of vehicles and engines that require E10 in volumes of less than 4 gallons should not have a problem finding E10 in any volume they need.