Eco Flow is the "Green Filtration company for the 21st Century", current practice has over 2 Billion used oil and fuel filter being thrown away just in the US alone annually, if we account this bad practice Globally the numbers are hundreds of Billions, every one of these filters contain at least 2-4 oz of used oil that remains in the current paper media filters that are sold today, Eco Flow has solved that problem with a s/s media that is cleaned to 100% effective and reused for up to 4 years repalcing 20-25 throwawy filter.. visit our web site @ www.EcoFlowusa.com for more infromation, and let's change the world....