[rotorwrench]

It's seldom you find aircraft fuel trucks that have been well cared for over time. A lot of the airports I've worked around over the years have had some older equipment but were seldom taken care of well. Most looked like they were ready for the scrap heap.

That old set up looks like it predates the single point fueling systems that a lot of them have today. The OP would likely never need that feature anyway.