SP-101 is an ethanol-free unleaded racing fuel. Designed to exceed the demands of performance engines that require better-unleaded fuel than regular pump gas. SP-101 will also fight vapor lock and help eliminate gumming up fuel injectors or carburetors during long storage periods. When properly stored, SP-101 will keep its freshness for up to 18 months. SP-101 is also the perfect fuel choice for small engine applications like generators, lawn equipment or agricultural pumps.