My personal anecdotal experience, it works pretty well. I use it every few oil changes.
Not sure if this has been posted but:
https://www.liqui-moly.com/fileadmin/user_upload/Downloads/Technische_Informationen/51069_TI_Cera_Tec_Additive_EN_1802_view_M014152_53095.pdf
Formed in 1989, APL is a...