I agree, since the spray was so uniform and covered so much (if not all) of the undercarriage, and had what appeared to be overspray on the fender liners….
I thought I touched it and it felt dry. I recall the guy you bought it from said there was no oil in engine when he received it. I also recall there was no AZ orange dust whatsoever sticking to the black undercarriage….so I thought it had to be relatively "freshly" applied. Hope you get her back on the road! Another one saved!