Originally Posted by Seb1987

I've been removing old grease from my bike with a bunch of rags/towels but now they are very filthy with old grease. I've been putting them in the washing machine, 3 times so far, and that does the trick.
But now I'm asking myself if I am destroying my washing machine. So how do you clean your old greased rags and towels? I would rather reuse than buy new ones consistently.

PS: I would ask this in a washing machine forum but that doesn't exist I think