Free Bottle of 2-Stroke Oil AdditiveWe provide you with a free bottle of 2-stroke oil, which you then have to mix with petrol (not provided) to create a lubricant for the crank shaft. You put this in before you start using the auger, as it is essential to making sure that your engine runs in a smooth and stable manner. This oil helps you have your auger up and running in no time, all you will need to purchase separately is the petrol.