Hi! My name is Matthew Christian from Tampa, Florida and on behalf of Expert Village, today I would like to talk to you about the proper use and maintenance of a yard weed eater. Let's take a moment and talk about fuel for your gas powered yard tool. Again as I mentioned earlier, most gas powered yard tools are two cycle or two stroke engines. They are unique in the sense that you must add the oil to the gas rather than oil to a crank case. There isn't no oil in the crank case. The unit relies on lubrication through the oil that you add to the gasoline. Most manufacturer's have their own brand of oil additives. Typically the mixture ratio is fifty to one. That is 50 parts gasoline to one part oil and not just any old oil will do. You must use two cycle specific oil additives. Typically when you go to the store you will find them in four ounce bottles. You just pour the four ounce bottle into a one gallon container an then add your fuel. In most cases, it is not an issue what grade gasoline you use. You could use low octane, you could use high octane. For maintenance not like myself, I prefer to use the high octane. It is a cleaner gas and I think it is better for the equipment that you are using. Another key area of concern is when you make your gas for your two cycle engine, make sure you have a separate container for perhaps your lawnmower which does not use oil in with the gas. So again it is important to have two separate containers. One for your oil mix and one for your straight gasoline and make sure you label them as such. you don't want to confuse the two. You would not want to put straight gas into your two cycled engine because that wouldn't have any lubrication in it and you would damage the unit. Likewise, you wouldn't want to put the oil gas mixture in your lawnmower that doesn't require the oil and the gas. It could have adverse affects on your lawnmower as well. So make sure you keep two separate containers, label them as such and make sure you follow the manufacturer's directions on mixing the oil additives for your two cycle engine.