Update: Fuel Bowser to the Rescue
Fuel Bowser to the Rescue
In addition to the water contamination of the diesel in Gunotsoga it is also more expensive. Carrying a diesel drum in the Land Cruiser isn't an option because the roads are very bad and the suspension would be badly damaged under that load.
The solution Tebogo found is a 1000 litre portable mobile fuel station. This will allow him to fill up with cheaper, clean diesel at a proper filling station in Shakawe which is 111 km from the base of operations in Gunotsoga. They can bring the browser with them and refuel the vehicle as needed.