The 1 ton Panel gas tank holds 18 gallons and the 1/2 ton Panel gas tank holds 16 gallons (47-55).

It looks like the Master Parts Book lists a different gas tank for 54/55 1/2 ton panel body trucks (listed as an external gas tank for 1/2 ton, so I assume it is for panel body).

Last edited by tclederman; 10/30/2007 11:19 AM.