This gas/oil ratio calculator can be used for determining the amount of oil needed for any gas/oil ratio required by the manufacturer's instructions for two-stroke engines.

**How to use:**

- Input the required gas/oil ratio.
- Input the quantity of gasoline in US gallons, UK gallons or liters.
- Click the "Calculate" button to find the quantity of oil required.

## Reference

Two-stroke (sometimes called 2-cycle) engines run on a mixture of gasoline and oil. When the substances are mixed, they both lubricate the engine and create combustion. All two-stroke engines are designed for a particular ratio of gas/oil mixture. To check you have the right ratio for the engine you're using, check in the operating manual. If you put gasoline in a two-stroke engine without oil in the engine will fail.

This calculator allows you to work out the exact ratio of oil and gas needed for any two-stroke engines.

## How to mix oil and gas

**Step 1: ** Begin by checking you are using the right measurement, as different
countries use different units, i.e. liters, UK gallons, or US gallons. Find the
correct oil/gas ratio for your particular engine. A number of fuel ratios may be
used, e.g., 24:1, 32:1, 40:1, 50:1, etc. The ratio tells you the quantity of fresh
standard unleaded gasoline (10% ethanol or lower) is needed for a specific quantity
of oil.

**Step 2: ** Mixing should take place in a fuel can, not inside the tank.

**Step 3: ** Once you have mixed the fuel, pour it into the tank and you're good
to go. Use the same ratio and operations every time your engine needs more fuel.

## Formulas & Examples

The Gas Oil Ratio Calculator employs the basic formulas below:

((128 * US Gallons) / Ratio) = US Ounces of Oil

((160 * UK Gallons) / Ratio) = UK Ounces of Oil

((1000 * Liters) / Ratio) = Milliliters of Oil

**Example 1: ** You've got 1 US gallon of gas, and your engine needs a gas/oil mix
of 40:1. There are 128 oz in 1 US Gallon. You'll have to add ((128 × 1) / 40)
= 3.2 US ounces of oil.

**Example 2: ** You've got 5 UK gallons of gas, and your engine needs a gas/oil
mix of 32:1. You'll have to add ((160 × 5) / 32) = 25 UK ounces of oil.

**You'll need to add:**

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This gas/oil ratio calculator can be used for determining the amount of oil needed for any gas/oil ratio required by the manufacturer's instructions for two-stroke engines.

**How to use:**

- Input the required gas/oil ratio.
- Input the quantity of gasoline in US gallons, UK gallons or liters.
- Click the "Calculate" button to find the quantity of oil required.

## Reference

Two-stroke (sometimes called 2-cycle) engines run on a mixture of gasoline and oil. When the substances are mixed, they both lubricate the engine and create combustion. All two-stroke engines are designed for a particular ratio of gas/oil mixture. To check you have the right ratio for the engine you're using, check in the operating manual. If you put gasoline in a two-stroke engine without oil in the engine will fail.

This calculator allows you to work out the exact ratio of oil and gas needed for any two-stroke engines.

## How to mix oil and gas

**Step 1: ** Begin by checking you are using the right measurement, as different
countries use different units, i.e. liters, UK gallons, or US gallons. Find the
correct oil/gas ratio for your particular engine. A number of fuel ratios may be
used, e.g., 24:1, 32:1, 40:1, 50:1, etc. The ratio tells you the quantity of fresh
standard unleaded gasoline (10% ethanol or lower) is needed for a specific quantity
of oil.

**Step 2: ** Mixing should take place in a fuel can, not inside the tank.

**Step 3: ** Once you have mixed the fuel, pour it into the tank and you're good
to go. Use the same ratio and operations every time your engine needs more fuel.

## Formulas & Examples

The Gas Oil Ratio Calculator employs the basic formulas below:

((128 * US Gallons) / Ratio) = US Ounces of Oil

((160 * UK Gallons) / Ratio) = UK Ounces of Oil

((1000 * Liters) / Ratio) = Milliliters of Oil

**Example 1: ** You've got 1 US gallon of gas, and your engine needs a gas/oil mix
of 40:1. There are 128 oz in 1 US Gallon. You'll have to add ((128 × 1) / 40)
= 3.2 US ounces of oil.

**Example 2: ** You've got 5 UK gallons of gas, and your engine needs a gas/oil
mix of 32:1. You'll have to add ((160 × 5) / 32) = 25 UK ounces of oil.

You may also be interested in our Alternative Fuels Conversion Calculator