From Truck Camper Adventure..
Today, Norcold recommends that their refrigerators operate within 3 degrees off level side-to-side and 6 degrees off level front-to-back. What does this mean for you when leveling your rig? Half a bubble on your RV level should be good enough for an overnight stay, but if I’m going to be boondocked for several days or a week at the same location then I like to get my rig as level as possible. Taking a few extra moments to properly level your rig will enable your refrigerator to cool better and last longer by preventing ammonia crystals from forming.
Take the time and level it right,you won't be sorry...
I level the refer perfect then I go outside and set my leveler bubbles to be perfectly level according to the already level refrigerator...This makes it quick and easy to be level without having to go inside,then I double check the level..
Once you have had to replace a RV fridge cooling unit,you will take the extra steps to be sure it functions properly..
