A field guide to picking a 4x2 fuel tank truck for regional diesel supply routes. Seven sections walk through route planning, chassis and cab selection, tank material trade-offs (carbon steel vs aluminum vs stainless steel with a comparison table), capacity math, safety systems, pump and meter configurations, and sourcing from China. 15-25 day lead times, and certification requirements for Nigeria (SONCAP), Kenya (PVOC), and Saudi Arabia (SASO). Built on real delivery scenarios from Mombasa to Manila.