Per the AAMVA CDL Manual's Section 8 self-check, what three factors determine how much liquid a driver should load into a tank?

AAMVA CDL Manual §8.2.7 (p. 8-8-2)

This is one of the manual's own listed self-check questions, meaning it's specifically flagged as likely exam content. Knowing these three factors (expansion, weight, legal limits) lets a driver reason through any loading scenario rather than memorizing a single example.