2-Stroke Fuel Mix Calculator
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Typical 2-stroke oil density: 0.85-0.95 g/mL
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Mixing Instructions
Add 2.56 fl oz of oil to 1 gallon of gasoline. Mix thoroughly before use.
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About 2-Stroke Engine Mixing
Why Proper Mixing Matters
Using the correct fuel-to-oil ratio is critical for 2-stroke engine performance and longevity. Too little oil can cause engine damage from insufficient lubrication, while too much oil can lead to spark plug fouling and excessive smoke.
Common Ratio Guidelines
Modern 2-stroke engines typically use ratios between 40:1 and 50:1. Older engines may require richer mixtures like 25:1 or 32:1. Always consult your equipment manual for the manufacturer's recommended ratio.
Mixing Best Practices
Always mix fuel and oil in a separate container before adding to your equipment. Add oil to gasoline, not gasoline to oil. Shake or stir thoroughly to ensure proper emulsification. Use fresh fuel (less than 30 days old) for best results.