So I just came from a coast to coast trip and when I got back to California, I noticed some black spots at the back of my truck. I'm not sure where it came from, but washing it won't take the spots away.
I went through snowy spots for several hundred miles, and I presume that's how my truck got those black spots. I will provide pictures later in this thread. But I do need help on taking them off. Thank you and I'll be in this thread all night.