Calculate gas oil mixture ratios
Use the mixture within 30 days or add fuel stabilizer to extend the shelf life. 2- Stroke Oil Mix Calculator. For a 50:1 ratio of gas to oil, use 2.6 fluid ounces of oil per Calculates ratio of gas to oil in two cycle engines. Find oil mixture ratio for outboard motor, chain saw, trimmer, weed eater, jet ski and dirt bike. To figure the ratio of gas to oil for your model of chainsaw, you must first convert gallons of gas to ounces to have like measurements for your calculations.