toilet bowl stain Home › Forums › Public Forums › General Plumbing › toilet bowl stain This topic has 2 replies, 2 voices, and was last updated 22 years, 8 months ago by Guest. Viewing 2 reply threads Author Posts 14 Aug 2001 at 7:40 am #275175 MasterPlumbersKeymaster i have a grey stain in my toilet bowl what will remove it 14 Aug 2001 at 9:59 pm #291310 GuestParticipant Try one wipe of hydrochloiric acid **+*+*+*+*+*ACID BURNS. USE WITH CARE +*+*+*+*+* 14 Aug 2001 at 11:31 pm #291311 GuestParticipant Coca Cola takes stains off porcelain. Author Posts Viewing 2 reply threads You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In