Xisico CS3 Compressor Question

Hello Fellow Airgunners,
I have a Xisico CS3 compressor that I won in a giveaway a few years ago. I only recently unboxed it because my main compressor is the ReadyAir and the Xisico is just a backup. Anyway, the instructions aren't very good and I'm unsure where to add the oil at. There are two "plugs". One is over the sight glass on the opposite side of the reel and the other is on the back between the fans (sorry no pics). Does anyone know where I add the oil? My assumption is that I remove the sight glass with a socket and add it there, but I thought I'd ask just to be sure. BTW, I have reached out to Xisico tech support and they never responded and every YouTube video I found doesn't cover where to add the oil. Thanks in advance.
 
Smallgamer,
Just checked out some New England Air YouTube videos on the CS3, there was a notation at start of one video's Comments section that a tool is provided to remove sight glass for oil to be added, wire spool side down. (Assume wire spool side is opposite sight glass side so that's why it's noted as facing down.) Search YouTube for Xisico CS3 and look for this notation by New England Air at start of Comments section. WM
 
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More clues to locate the referenced New England Airgun YouTube video: Titled "Startup," at beginning of Comments Section New England Airgun states, "Correction...put the compressor with wire spool down..." Hit "Show More," at end of this sentence for sight glass tool info, also May 6, 2021, will appear. This video is about 6 down on the list of CS3 videos and about fourth one by New England Airgun. WM
 
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More clues to locate the referenced New England Airgun YouTube video: Titled "Startup," at beginning of Comments Section New England Airgun states, "Correction...put the compressor with wire spool down..." Hit "Show More," at end of this sentence for sight glass tool info, also May 6, 2021, will appear. This video is about 6 down on the list of CS3 videos and about fourth one by New England Airgun. WM
Excellent! Thank you.
 

Start here - this thread was my introduction to the pump. There is a video on that thread that goes over setup for the oil bath units.

Again - if you have a greaser pump DO NOT PUT OIL IN IT!