I noticed the coolant was getting a little low in my brothers car so I went out and bought this Ford special orange stuff since that's what I was told it uses. Anyway, I'm getting ready put it in, and I notice this dirt stuff in there. It's like little sand particles, or the little rocks they use for asphalt roofing. Some if it is hard like the asphalt roofing, but sometimes I can press my finger in it and it squishes like half dry mud. Any ideas what this stuff is? I haven't added the coolant yet because I want to figure out what this is.
My brother has been out of state for a month and won't be back for who knows how long. I am just trying to keep his car in decent shape so if he comes home he doesn't have to spend the next few days doing the general maintenance lol.