Turned off? While in storage, days or week. traveling, 6-8 hours. or accidentally turned off.
How full is it, refrigerated cold foods, large thermal mass takes longer to cool down. How often is the fridge door opened? Ambient temps outside 40 or 60 or 90, at back of fridge and inside RV, air conditioning running.
Personally, if not running for 6 hours in daytime, fridge half full, temps around 85, I would not trust any perishables, throw the milk out.
Ken
2006 Winnebago Outlook 29B E-450.
2012 Honda CR-V AWD
Blue Ox Aventa LX tow bar and Brake Buddy Vantage.