How to Clean Used Cooking Oil for Diesel Fuel
Many diesel vehicles, especially older ones, can run on clean vegetable oil. For vegetable to be used as fuel, it needs to be clean and free of foreign particles. If the vegetable oil is not cleaned before use, it may cause severe damage to the vehicle. Cleaning the vegetable oil also helps to keep it in a liquid form that is easier to store and dispense.
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Instructions
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Heat the oil to a temperature that makes it liquid. Some oils require more heating to turn it to a liquid form, and others are liquid at room temperature. Heat it enough that it runs easily through a filter.
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Fashion a filter to the edge of the container with the used vegetable oil. Hold or tie the filter to the pouring edge of the container, or onto the top of the container catching the clean oil. The oil must pass through this filter before you can use it in a vehicle, and you may need to filter the oil several times before the oil is clean.
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Check the oil to make sure it is clean. When you look into the liquid oil, it should appear free of particles and objects. If particles remain, filter the oil again until there is no visible residue in the oil.
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Store the oil in a clean container. Ensure that no particles or other objects can get into the container holding the oil, or you will need to repeat the filtration. Drums, buckets with lids, or fuel containers all work well.
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Tips & Warnings
Fine-mesh screens and other types of filters can be used to filter the oil. Use whatever is available, cheap, and easy.
If oil is not fully cleaned when put into a tank, it may cause damage.
