Soo The other day I noticed that I could not see the coolant in my reservoir.. So I stuck a small clear hose down into it so see if anything is in there.
I pulled it out and it was covered in gunk and goo. Dark milky sh*t. I took the reservoir off and cleaned it out really good and put it back on and filled it to the right level. I Then took my radiator cap off and the coolant looked a little darker than usual but nothing too severe. I stuck my finger in, and scraped the side and it had a bit of gunk build up aswell. Should I be concerned? A radiator flush and clean is pretty expensive. Plus alot of work.
