I'm not too concerned by the car. It runs kinda hot but
isn't near boiling over unless I get stuck waiting for a
train and leave the car running for 20 minutes. This isn't
a problem since it dies all by itself if I let it idle for
more than a minute or so.

But it does run hot and the B30 has the same bad habit as
its smaller brothers of eating cams. In an attempt to
put off the inevitable rebuild (what with the 3 or 4 manifold
bolts) I figure synthetic oil is a good idea.

So the shell rotella T 5-40 is not a real synthetic? The
web page seems to imply that it is a real synthetic by saying
stuff like "...Rotella T Synthetic 5W-40 is a fully synthetic
heavy-duty engine oil." but then the earth is also flat and
the the mayans, who are really from atlantis, built a star
ship in 342bc, if you believe everything on web pages.
chris