Dave, don't let paranoia overtake reason.
1) These vehicles are getting old and maintenance is going to be at a higher
rate.- both in frequency and dollars.
2) Parts are getting old, and parts that deteriorate are surely past, at or
nearing their life limit. - Gotta replace them, preferably as preventive
maintenance rather than after the fact of failure - ESPECIALLY fuels line
(No 1) and Coolant Lines (No 2) and Brake Lines (No 3). After those three in
that order of importance, not much else
will immediately threaten your life, your loved ones  or your Van.
--------------- Clip --------------------
I replaced the rubber brake lines and clutch hose on my 83 Westy.
The inside diameter of the old hoses had shrunk down to "Too Tight" to push
a round toothpick through.
The new hoses had a full 1/8" flow all the way through.
Yes it stopped better with less foot pressure.
I replaced them because they showed slight signs of wetness where the steel
ends crimped to the steel threads. Just on one not on all. Not to mention
the outer surfaces were well decorated with cracks.

Stan Wilder
www.engineceramics.com