Mixing fuel for 2-stroke (2-cycle) engines found in chainsaws, weed eaters, leaf blowers, and outboard boat motors can feel confusing. Here is the cheat sheet to get the exact mix every single time.
⛽ 2-Cycle Oil to Gas Ratio Cheat Sheet
Oil required for every 1 Gallon (128 fl oz) of gasoline:
| Ratio | Fluid Ounces of Oil | Pints of Oil | Milliliters (ml) |
|---|---|---|---|
| 50:1 | 2.6 fl oz | 0.16 Pints | 77 ml |
| 40:1 | 3.2 fl oz | 0.20 Pints | 95 ml |
| 32:1 | 4.0 fl oz | 0.25 Pints | 118 ml |
| 24:1 | 5.3 fl oz | 0.33 Pints | 158 ml |
🧮 The Mixing Formula
Divide 128 fluid ounces by your ratio number: 128 ÷ 50 = 2.56 fl oz (approx. 0.16 pints).