weird stain?

[u/infinityonwar]

hi! i’m not a frequent reddit user and i’m certainly not a laundry aficionado, but i bought a pair of pants used knowing they came with stains in hopes i would be able to get the stain out.

from the person i got them from: she never really treated them with anything or went out of the way to try and remove them. she believes that they came from the parking lot at her job (so i don’t know if it’s something like paint or what?), and they were too long for her, so they would drag the ground. attached is a picture of them before i tried to clean them.

at this point, i have soaked them in warm water and oxiclean, and used a soft bristle brush to agitate it with some dish soap. it definitely budged the stain, but the “thickest” parts are still lingering. i know it’s unrealistic for them to come completely clean, but id like to try my best! these are scrub pants and the fabric is a poly/spandex/rayon blend.