Finally something I can agree with shine on. I have a hard enough time keeping oil out of the air to want to add oil at any tools at that point.
my new shop will have completely separate areas for finish and fab work . my booth will be in my clean rook where i will build in .
this is true for me as well. i dont oil any of my tools. when they go i just toss them and buy a new. i dont need oil spray around the shop. with that said i have dynabrades that are 25 years old and get used every day and never have oil go in them. all of my non dynabrade tools like angle grinders last me about 2-4 years with no oil then they are junk.