Our new-to-us house included a heavy-duty basement dehumidifier with a blower motor calling for a few drops of SAE 20 oil twice a year. Some searching turned up a specialized flavor of 3-In-One Oil for motors.
It arrived with free inclusions:
Backlighting makes them more obvious:
There’s also a free-floating jellyfish slightly denser than the oil:
As is now the typical case with Amazon purchases, the only choices are to return / exchange the item, as the seller cannot be contacted directly. I tried sending 3-In-One a question through their website, en passant discovering they’ve been Borged by The WD-40 Company, only to be rejected by the site’s Captcha without ever seeing the test images.
AFAICT, it’s oil and the motor will just have to get used to it.
The Smell of Molten Projects in the Morning 
For what it’s worth, I found that some websites won’t show Captcha stuff to me if I’m using Pale Moon as a browser. Or, it will show but I can’t get a successful run. Also some other content doesn’t show on Pale Moon, but I haven’t tried to figure out which ones.
I keep a current version of Firefox and use that when I run across such issues.
And it still failed. No picture on FF, no questions, just failed.
And on Chrome, too, which tells me they really don’t want to hear from anybody.
I can take a hint!
Don’t be fooled. Those “inclusions” are alien embryos. Carefully filter them out of the oil and immerse them in a nutrient-rich water-based solution. Apply a 3 microvolt 15Hz signal, maintain a pH of 7 and a 37C temperature. Keep in darkness. Gestation time is ~3 earth years.
There’s a chant rising in the background: “Don’t open the jar! Don’t open the jar! Don’t open the jar!“