grey sludge marks on washing Home › Forums › Public Support Forums › Help And Support › Washing Machine Help Forum › grey sludge marks on washing This topic has 1 reply, 2 voices, and was last updated 20 years, 9 months ago by admin. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts July 16, 2005 at 10:25 pm #10721 adminKeymaster We’ve got a zanussi FJ 1040 and its’s started leaving bits of grey sludge on the washing. Tried cleaning the machine with soda and with proprietary washing machine cleaner, but doesn’t seem to have cleared it. Any ideas? July 16, 2005 at 10:49 pm #141663 Dave_ConwayParticipant Re: grey sludge marks on washing Try a 90C (hottest wash) with no clothes but a small amount of detergent. Normally it’s just caused by a bacterial build up from many low temperature washes, 60C is required to kill most 😉 Check the filter afterwards please 😀 Dave. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In