I committed a major faux pas while returning from Montana this week. I've
been hanging a litter bag on the diff lock switch on the dash. While stopped
for gas, my passenger emptied the litter bag and in doing so, inadvertently
engaged the diff lock. I subsequently drove for about 30 miles on the
freeway at 75mph before discovering that the diff was locked. This is a
definate no-no, but there is no discernable damage as of yet. Maybe I got
lucky, maybe problems will surface later, I don't know.

-MM