One of our two tenders is a 1977 Peterbilt. Tender 7-7 still earns it’s keep, even though it is over 40 years old now. It hauls 2500 gallons of water. It has a Waterous PTO pump and 3 dump valves on the rear of the truck which give multiple options for water distribution. It carries a 2000 gallon drop tank on the side of the truck allowing for a water source to be set up in any location. The 10 speed Eaton fuller transmission makes this truck difficult to drive. Not much of a problem for the truck drivers on the department, it just creates more training time required for anyone not familiar with driving big rigs for a living.