Kind of like catsup Dave...if you looked at it thru a microscope, you probably wouldn't eat it....lol Do as you wish...but oil is a refined lubricant...we did this experiment in a shop class in HS 40 yrs ago, and I really don't think much has changed...other than only a handful of refineries are left here in the US...The Good Lord only knows what we are getting from your back yard....