I was calling on body shops and detail shops as a Trainer for Meguiar's back in the late 80's and came across a lot of guys using this stuff in detail shops.
Never used it myself but remember reading on the label that it contained mineral oil.
I watched a guy use a wool pad on a rotary buffer with this product on a red Ferrari and look me in the eyes and tell me, "I'm so good I don't put swirls into the paint"
I actually tried to tell him it wasn't about how "great" he was, it was about the fact that the individual fibers that make up a wool pad cut into and instill swirls into paint and the Liquid Ebony was simply masking these swirls to his eyes.
That went right over his head and he continued to swirl out the Ferrari...
This was at Ron Tonkin's "Gran Turismo"
exotic car dealership in the Portland area. Somewhere I have pictures of a detailing class Terry Richards and I put on for a Porsche club at these facilities...
You might be able to find some on eBay?