Last night I drained my radiator and was surprised to see a black tint to the water. No antifreeze in the system yet, only water. I was expecting to see more of a rust color as I have in the past.

I didn't take a photo, and don't know if there was any oil in it. I dumped it out before my brain thought "that water's black so maybe you should analyze it in the daylight". It's gone.


It was not a thick black color, but more of a black tint. And I didn't notice any oil appearance either.

I'm scared to ask, but anyone seen this before?

Head Gasket? Crack in head?