Looking for information on Pendlay nb bar

Bought a bar years back but am looking for info on it. all my google and AI searches don't turn up much but some have lead me here. maybe this community will know some info. I can post a photo when i get home but bar is a **Pendlay nb bar**. endcap is blue and states **nb Pendlay 20kg** My assumption is this is a needle bearing bar used for oly lifts. I must of purchased this bar 8 years or so ago on craigslist, it was mostly free as i was after an great set of Eleiko bumper plates i still use today.

I have been using my boneyard ohio bar for all my oly lifts but have been tearing my hands, i have a feeling this may be a good bar to start swapping it with. If anyone does know anything about it what's my best bet to take care of it? just 3 in 1 in the sleeve? barbell still spins fine, but i do see what looks like brown sludge coming out the end. i assume grease. can i just wipe it clean and drop some 3 in 1 down to help it out?