What is the ratio to mix 2 stroke oil with 5 liters of petrol?

The typical mixing ratio for 2-stroke oil and petrol is usually 50:1, meaning 50 parts petrol to 1 part oil. For 5 liters of petrol, you would add 100 milliliters of 2-stroke oil. However, always check the manufacturer's specifications for your specific engine, as some may require different ratiOS.