Echo 6450025 Power Blend Xtended 2-stroke Oil Mix for 2.5 Gallon (50:1) 6 Pack Exceeds ISO-L-EGD and JASO M345/FD requirements 6 pack of 6.4oz bottles, 1 bottle mixes 2.5 gallons of gasoline at 50:1 ratio Contains fuel stabilizer Universal mix oil can be used with any 2-cycle engine Genuine OEM Echo Part