Have an old petrol can that used to hold a combined leaded petrol/oil mixture for chainsaw. Want to clean it thoroughly to hold unleaded petrol, but not sure how. Don't want to contaminate unleaded petrol motor of new lawn mower.
Not to worry, just drain out any old gas, put in a little new gas, shake it a little, pour that out fill it up and use it. If its bad varnished w/ old gas use stuff called Seafoam pour it in, shake it up let it sit over night and pour that out use like normal.
Pour in a quart or so of the fuel u want to use the can for and slosh it around for a few minutes then use the "contaminated" fuel to start your next bon fire
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