Things You'll Need
Instructions
Reuse old model airplane fuel as a cleansing agent for the engine you've nosed into the ground. It's especially good at removing old mud. Use old rags, toothpicks and an old toothbrush to clean hard-to-get-at engine parts.
Label your container as "Hazardous Waste."
Find your nearest hazardous waste disposal site and dispose of it. Go to the Earth 911 website (see References) and click on your state, then click on "Programs and Resources." You'll find contact info for your state's Department of Environmental Services and other hazardous waste related contact info.