"Shawn" wrote
??? Have you ever driven up to the Eisenhower tunnel on I-70 in the
middle of summer? 14,000 ft density altitude at 60 mph. Some cars
struggle with one person and a half a tank of gas!

Which is why all three of my vehicles have turbochargers. The Volvo XC-70
has a rated tow capacity of 3300 lbs and gets a surprisingly low 21 mpg
around town towing nothing... not a lot better than my Dodge one ton dually
with a Cummins Turbo Diesel - it gets 18 mpg average towing the Nimbus over
the pass to Ephrata. With the camper on, the mpg goes down to 13 towing the
Nimbus - but it would be higher if I wasn't going up the hill at 73 mph on
cruise control with the house on the back dragging the Pfeiffer.

Jim