I havent posted for a while,so I thought I would ask a question about oiling cars. I live in the heart of the rust belt,and it is a fairly common practice to have cars and trucks sprayed underneath with used oil.they drill the rockers and doors and spray them inside,spray the whole frame and suspension. I have all my daily drivers "oiled" every fall,and I havent replaced any rusted fuel lines or brake lines in years.the oil soaks in between panels and spot welded areas,any place the salt collects. if there is rust the oil soaks in to it,and slows it down considerably. it is sort of messy for a few days after it is done,once the excess oil drips off it is not bad. my question is is this a rust belt thing or is it just a local thing. when I talk about oiling cars a lot of people never heard of it.