Old Oil Blending Idea Won’t Save Anything in Modern Engines

The first time you hear about it, oil blending sounds like a simple, good idea. Start with motor oil drained from the crankcase for a regular oil change, filter to remove the small particles of metal and other contaminants, blend with diesel fuel, and pour the mixture back into the fuel tank so the engine burns it.You save a gallon of diesel fuel for each gallon of oil blended, and there is no cost for disposing of the waste oil. And as we all know, diesel engines are built like bricks and can burn vegetable oil, or standard diesel fuel,