We used and abused our 60 litres ARB fridge for a year when travelling round oz , changed the plug lead for 12 volt at ARB in Broome for the Engel type plug .
It never worked it's way out after that and fridge ran constantly for a year , we only did the start of the Gibbs but the corrugations were shocking , the fridge survived ok so they must be reasonably well built .
Ours is now fixed in the new camper to be used just as a fridge and the ubercheap everkool knock off is going to be used as a freezer only and is in the back of the GQ , will see how it all works when we do the corner country Birdsville trip in a couple of months .