Will greased lightning work on mildew that has been there a few months? I got 99% of it off but you can still see a bunch of little gren/brown specs. I've heard people raving about the Mr. Clean scrub pads.
Grease lightning will deteriorate the stitching. Take it from someone who made that mistake. The Mr. Clean pads work even better with no adverse affect on the vinyl or stitching.
It's a little late now, but I always take my seats out for winter storage. 4 bolts to take the driver seat out, 4 more for the passenger seat, and the back seat just lifts out. Well worth the time. B