All of the DeLorean frames were coated with an epoxy. The later cars were also undercoated by conventional means. It is not a coincidence. --- simonsays10002003 <simonsays10002003@xxxx> wrote: > hi i have been looking at buying an 1983 delorean > and have seen a > couple now the one thing iv noticed is that the late > cars seem to > have a thin black underseal where as the early cars > al most never do > there still the gray por15 coating.is this just > coincidence or were > the later deloreans undersealed?