5/GAL PAIL F E2 E98 EthanolFuel Factorys F E2 is available for those ethanol users who are looking for more than an 85% blend. This 98% Ethanol is blended with 2% ultra pure hydrocarbon components used in our fuel blends. The consistency and quality of F E2 will allow for more time on the racetrack and less time testing the ethanol blend for accuracy. Color: Aqua Unleaded: Yes Octane (R+M) 2: 99 Motor Octane: 91 Research Octane: 107 Specific Gravity: 0. 789 RVP: 2. 92