STA-BIL Full Synthetic 2-Cycle Oil - With Fuel Stabilizer For Up To 12 Months Protection - 1 Gallon Multi-Mix - 50:1/40:1 Mix Ratios - Low Smoke Formula, 2.6 fl. (22403-12PK). Multi-mix technology - Safe for use on all two cycle engines (50: 1|40: 1).