[jetblackZ4]

Hi. I was working on a Miata for a friend and it has a beige top. Vinyl, not cloth. It has some smudges on it that look like some grease or dirt got on it at some time. Not really dark but noticable. I'll try and post a pic with this.
I have Ragg Topp cleaner and that didn't get it out. I tried several times and tried brushing it with a soft brush, a MF cloth etc. I let it dwell for 10+ minutes also. Then I tried Amazing Roll Off and still won't budge. I even tried some Simple Green at a 10:1 water SG dilution on a small spot and nothing. Perhaps slightly lighter but still there.
Then only thing I can think is that something got on the top when it wasn't protected and somehow got absobed a little into the vinyl. The owner doesn't know what it is.
Has anyone run into this sort of problem and does anyone have any suggestions that I can try to get this out.
All thoughts and suggestions welcome.
G