I just got back from a weeklong camping trip and used a new gadget Camco
Fridge Airator (about $15 from Amazon). My 3-way
fridge cools very well on 120v. and
propane, BUT unevenly, in that items like lettuce on the bottom shelf will freeze, and top shelf items will be warmer. I put the
battery powered fan on the bottom, and presto my
fridge temps are even all over. No more freezing on the bottom shelf, even temperatures all over. I didn't use any thermometer for this test though, just from the feel of my hand.