They seem to have a habit of appearing on that list, as does sister brand Fanfaro.
I have used them in the past and have had no issues (That I am aware of)
However I know that issues caused by oils can take many thousands of miles to become apparent, and for me at least it just isn't worth the risk to your engine just to save a few quid at each oil change.
There are other alternatives that don't cost a huge amount more that would likely be a safer long term bet.