Waste oil pre heater for oil burner ?

I have tried to build waste oil burner pre heaters before and they are very unreliable. Ever cook soup and forget to stir the pot ??? in just 1 hour you have a ruined pot with 1 inch of gunk stuck to the bottom , same thing with waste oil heater coils and tanks . Check out my store front https://www.ebay.com/str/burnersgalore Check out my web site http://www.nobox7.com/ Check out my store front https://www.amazon.com/shop/nobox7 Support this channel on Patreon https://www.patreon.com/user?u=3620781 Email me optimizedprsllc@gmail.com Call me if your interested in this product 001-217-710-9653 This video contains paid links that receive a commission from if a sale is made