Final report. I finally had a chance to take a longer trip more
representative of the sort of driving we do when camping, a 300-mile round
trip from our home in Carlsbad, CA to Joshua Tree, CA.

Mellow Yellow (84 1.9l AT Westy) USED to get 15.5 mpg on the highway. NOW
gets 17.6 mpg, at around 70 mph. This improvement was due to wheel alignment.

For all the other things that I investigated, see
http://camping.elliott.googlepages.com/poormileage

--
Mike "Rocket J Squirrel" Elliott
71 Type 2: the Wonderbus
84 Westfalia: Mellow Yellow ("The Electrical Banana")
74 Utility Trailer. Ladybug Trailer, Inc., San Juan Capistrano
KG6RCR