How much 2 stroke oil do you put in for 5 litres of petrol?

For 5 litres of petrol, you will need to add the appropriate amount of 2-stroke oil as per the manufacturer's recommendations. The oil-to-petrol ratio can vary depending on the specific type of 2-stroke engine and the oil being used. Typically, the ratio is around 25:1 to 50:1, but it's important to refer to the owner's manual of your 2-stroke engine for the exact ratio. For example, if the ratio is 50:1, you will need to add 100ml (2 ounces) of 2-stroke oil to 5 litres of petrol. Always mix the oil and petrol thoroughly before adding it to the engine's fuel tank.