The original post has a mixed grasp of the 737.Both phrases, "centre tank" & "reserve tank" are used, in this case they meant “centre”
However, some 737 "classics" were fitted with a Rogerson aux fuel tank. So you had an extra panel with the aux tank swiches & low pressure lights. Plus a Smiths or Simmonds Aux tank indicator.
"Sometimes is is better to remain quiet & seem a fool, rather than open your mouth & remove all doubt"
