I washed some fabric that I purchase years ago. It is a black cotton treated with some oily, waxy compound. Originally it was linseed oil and maybe that is what is on this cloth.
Well, it did no good to my washing machine. I tried to clean the residue left with borax, soda ash paste (same as washing soda). Those worked OK, but plain ol’ Bar Keepers Friend worked the best. I used the hot water cycle, but I’m not sure if this was good or made it worse.
My concern is the part of the washing machine that are not visible.
Is there anything else that I should use?