B20

This blend contains 20% biofuel and 80% of a petroleum based product. Those who are interested in reducing their CO2 emissions even more may choose to increase to B20 after running B5 for a sufficient amount of time (determined on a case-by-case basis). B5 must be used prior to increasing B20 in order to prevent any potential filter clogging issues. By using B20 you will be reducing your CO2 emissions by 15.