Echo Power Blend Xtended 2-stroke Oil Mix for 2.5 Gallon (50:1) 6 Pack Echo PowerBlend Xtended Life Oil is a universal 2-stroke oil manufactured exclusively for ECHO. It is a semi-synthetic blend of oil certified for use in all air-cooled 2-stroke outdoor power equipment engines and exceeds ISO-L-EGD and JASO M345/FD requirements. PowerBlend Xtended oil has superior cleaning capabilities to minimize exhaust port blockage while protecting against rust wear and corrosion and providing low smoke emissions It also contains a fuel stabilizer that doubles fuel life.