Flammable chemicals such as gasoline, oil and kerosene must be disposed of in a safe manner. It can be extremely dangerous and illegal to dispose of flammable chemicals in a reckless or unsafe manner. For example, it is illegal to dump flammable chemicals in the trash, drain or on the ground. Even used chemicals are still flammable. There are a few steps to dispose of dangerous chemicals properly. Also, there are a couple different options for disposal.
Store the substance in an approved container for the type of chemical you are disposing. For example, use a gas can if you are preparing to dispose of gasoline. Also, make sure the container is labelled so that you and others know what's in it. Also, check with your local or state laws for how much of the chemical is allowed to be stored in a single container.
Check with your local government to find out the proper way to dispose of the chemical. Also, calling the fire brigade may be an option.
Check with your local government to find out how much of the chemical is allowed to be in your vehicle.
Take the chemical to a business that handles the chemical. For example, you can take your used oil to a place that changes oil. They will take the oil off of your hands.