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How Much 2-Stroke Oil Do I Need?

Find your fuel amount and ratio for the exact oil to add. For example, 1 US gallon at 50:1 needs 2.6 fl oz (76 mL) of oil, and 5 litres at 50:1 needs 100 mL. Each fuel amount has its own page with easy measures, accuracy tips and how to fix a batch mixed at the wrong ratio.

US Gallons (oil in fl oz)

Fuel	50:1	40:1	32:1	25:1	20:1	16:1
1 gallon	2.6 oz	3.2 oz	4.0 oz	5.1 oz	6.4 oz	8.0 oz
2 gallons	5.1 oz	6.4 oz	8.0 oz	10.2 oz	12.8 oz	16.0 oz
2.5 gallons	6.4 oz	8.0 oz	10.0 oz	12.8 oz	16.0 oz	20.0 oz
5 gallons	12.8 oz	16.0 oz	20.0 oz	25.6 oz	32.0 oz	40.0 oz
6 gallons	15.4 oz	19.2 oz	24.0 oz	30.7 oz	38.4 oz	48.0 oz
10 gallons	25.6 oz	32.0 oz	40.0 oz	51.2 oz	64.0 oz	80.0 oz

Litres (oil in mL)

Fuel	50:1	40:1	32:1	25:1	20:1	16:1
1 litre	20 mL	25 mL	31 mL	40 mL	50 mL	63 mL
5 litres	100 mL	125 mL	156 mL	200 mL	250 mL	313 mL
10 litres	200 mL	250 mL	313 mL	400 mL	500 mL	625 mL
20 litres	400 mL	500 mL	625 mL	800 mL	1000 mL	1250 mL

Need a different amount? Use the 2-stroke mix calculator for any volume or ratio, see the full table for one ratio on its ratio page, or print the mixing chart PDF.