Levi's 514 34x34

Levi's 514 34x34 Please look carefully at all pictures. There is a stain in the pants leg (front) circled in last pic. It is a dark spot about 3" x 1 1/2" that has not been able to come out in the wash. I think it was oil from work? I haven't worn these in a really long time. The bottom seam of the pants leg twist in. You can notice the crease in the pictures. I think that's just the style? 56% COTTON 46% POLYESTER.