Intro: Refilling Oil on an Eaton Polar Air Compressor (Made at Techshop)
Step 1: Remove rear cover, using triangle key.
Step 2: Locate oil supply
Step 3: Remove filler cap with socket wrench.
Step 4: Fill with oil ( see image 4 for oil type) be sure to only fill up to between the two red lines.
Step 5: Clean up any oil dripage and put the cap back on. Do not over tighten cap (monkey tight).
Step 6: Put cover back on and store triangle key in a memorable spot.