Driving on that river bed in Mexico was not the best for the old dorm fridge and after three years, it quit. You can hear the compressor turning, but it doesn't cool. All things considered I think it was a good run. 3.3 cf (98 qt) for $150 and lasted 3 years.
I replace it with an energy star mini freezer
https://www.homedepot.com/p/Whynter...reezer-with-Lock-in-Black-CUF-301BK/300981485. that is being controlled with a thermostat
so i can set the temperatures as a refrigerator. I went with the freezer since they have better insulation. I like the fact that the door inside is flat so I can use the whole depth of the unit.
I have one 165W solar panel feeding two marine/rv deep cycle group 27 batteries (85 Ah each I think). I have the van parked in my driveway in the Houston sun with the temperature being around 95F and the thing is being running 24/7 with no problems.
The old fridge will make some clanking noises (compressor) when going oven bumps. The new one doesn't, it seems to have better suspension.
Here you can see the thickness of the insulation. I've added a child lock so it will stay closed when on the move. I can fit a full gallon of milk.
I've putt it to the test already and it works quite well. I joined a Toyota group at Off Camber off road park in the Texas hill Country and did well.
I rip one tire and had to change it in the middle of the climb. The UniJack worked quite well in those circumstances and with a little help from my friends and tying the van to a Jeep uphill, I was on the trail in no time.