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keisanHigh-precision calculations for everyday life and work

Gasoline-to-oil mixing ratio

Author: azurinExecutions: 713

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This calculator determines the mixing ratio for gasoline and oil used in Azurin-spec racing kart engines (Rotax Max). It provides the calculations needed to achieve an accurate mixture by measuring the weights of the gasoline and oil with an electronic scale based on the ambient temperature.
When the temperature is 35°C or higher, the mixing ratio is 30:1; when the temperature is 5°C or lower, the mixing ratio is 45:1; and when the temperature is between 10°C and 35°C, the mixing ratio is calculated proportionally based on the temperature.
Temperature T
℃←Expected temperature
Gasoline Volume VG
mL←Volume of gasoline to be prepared
WG g←Weight of gasoline to be prepared
WO g←Required Oil Weight
W g←Total Weight
VO mL←Required oil volume
VS mL←Total Volume
MR  : 1 ← Mixing ratio
Calculations are based on a specific gravity of 0.74 g/mL for gasoline and 0.865 g/mL for oil.


This is strictly the “azurin” formula; please use it at your own risk. azurin assumes no responsibility for any losses or damages, whether direct or indirect, arising from the use of this calculator. All consequences resulting from the use of this calculator are the sole responsibility and burden of the user.

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