811191  Automotive Oil Change and Lubrication Shops 

This U.S. industry comprises establishments primarily engaged in
changing motor oil and lubricating the chassis of automotive vehicles,
such as passenger cars, trucks, and vans. 

The data published with NAICS code 811191 are comprised of this part 
of the following SIC industry:

     7549 (pt)  Automotive Oil Change and Lubrication Shops