No Ford transmission reliability issue while on the trip .... only:
1. 5 quarts low on the fluid,
2. because I didn't check it on the first part of the trip,
3. because the transmission was a remanufactured one installed 3 days before we left on the trip and should have been filled and remained filled,
4. because the orignal transmission should NOT have failed in only 51,000 miles,
5. and because either the installers, or remanufacturers, of the replacement transmission shouldn't have left a pressure check plug in the transmission only partially screwed in such that it would slowly leak while we were traveling on the first part of the trip. :E
The Sprinter BETTER be super reliable considering what you pay for it and considering you could be out of luck if it doesn't turn out to be reliable in many remote/rural areas of the country. Actually, I have read in these forums that in fact transmission issues are real issues on Sprinters - at least when employed in Class C motorhomes ... which load the chassis constantly often close to maximums ... and then many owners often try to tow on top of that.
The Ford TorqShift 5-speed (6 ratio) transmission has a generally stellar reputation and is typically not failure-prone. I'll install a Scanguage this year to make sure that my driving habits of cruising full speed up long highway grades with full air conditioning in the Sierras and Rockies do not overheat my replacement transmission. The replacement transmission is a heavy duty remanufactured one and is guaranteed for 3 years with unlimited miles. However, the fluid in the original failed Ford transmission was a healthy pink color - with no brown discoloration at all.