For popups with the smaller 3-way fridges, the LP was always colder ... and this was by rule, not just my particular fridge. I am not sure if the hard-sided trailer fridges are the same or not, but I suspect that they are.
110F in direct sun is brutal and is going to be challenging for an A/C. A delta of 25 degrees in that sort of heat probably isn't too bad. But, others would know better than me.
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Every time you use an apostrophe to make a word plural, a puppy dies.
TV: 2019 F-350 Lariat 4WD CCSB 6.7 PSD 3.55, 3,591 lb payload
Former RV: 2018 Rockwood Mini Lite 2504S
Former RV: 2007 Fleetwood/Coleman Utah
Former TV: 2005 F-150 King Ranch 4WD SCrew 5.4L Tow Package
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