The holding capacity of the fuel tank trailers commonly ranges between 9000 to 9500 US gallons for tandem axle trailers, which can be configured in 1, 2, 3, 4, or even 5 compartments. Read more about [tanker trailer capacities](https://www.trailersoftexas.com/blog/how-much-does-a-tank-trailer-hold--25081).