Deep freeze Ice for longer trips
Hi, when we go on long trips say 1-3 weeks, we freeze 4x2 litre Milk cartons of water weeks before we go. This deep freezes the water, which will last longer.
I then run our 40ltr Engel as a freezer and the Techni Icebox 40ltr as a fridge.
Then each morning rotate 2 of the frozen 2 litre bottles which sit in opposite corners, this maintains the fridge (Icebox) at around 3 degrees. The ice doesn't melt much at all, you'll find that only about 5% of it has melted after 24 hours.
I also add a couple of ice bricks to sit around the top just to assist with extra cooling.
Works a treat, we did this on 3 week trip from SA up to Kunnunurra, Gibb River Rd, Broome, Tanami track back to SA.