Sanding and Rinsing

• 1). Insert the bit shaft of the twist knot cup wire grinding wheel into the pneumatic grinder and tighten it down with the tightening chuck. Insert the tip of the chuck into the hole in the grinder head, align the slots in the chuck with the slots in the head and then twist the chuck clockwise to tighten the wheel in place.
  
  
• 2). Grind away the rust from tank, working from top to bottom. Work around the tank in circles until you reach the bottom of the tank. Move the grinder back and forth over the surface to be most effective.
  
  
• 3). Dust the tank off with a dusting brush and then rinse it off by fastening a spray nozzle to a garden hose and spraying the tank from top to bottom. Wait 24 hours for the tank to dry.
  
  

Priming and Painting

• 1). Pour 1 gallon of rust-encapsulating primer paint into a 5-gallon bucket. Hang a metal paint screen from the inside rim of the bucket.
  
  
• 2). Slide the 1/2-inch nap paint roller onto the roller frame and screw the extension pole into the handle. Roll the roller down the metal screen and dip the nap fibers about 1/2 inch into the paint. Roll up and down the screen and back into the paint until the roller is soaked with primer.
  
  
• 3). Roll the tank, working a 4-square-foot section at a time. Use an up and down zigzag pattern. Roll out the roller lap lines to smooth out the primer and ensure proper coverage. Use a paintbrush or mini-roller to reach odd-shaped parts of the oil tank if needed. Prime from the top of the tank to the bottom. Wait 24 hours for the primer to dry. Then, apply a coat of rust-inhibiting finish paint. Wait 24 hours and then apply a second coat.