The Ethos Oil Reformulator Doubles Your Engine's Oil Life & Reduces Wear & Emissions. ✅ Doubles Your Engine’s Oil Life - Just Add 1 Ounce Ethos FR per Quart of Engine Oil. If you prefer using Green Products, running Ethos FR+ and Ethos FR reduces your carbon footprint by reducing your emissions, increasing your fuel mileage and cutting your engine oil use in half.
