What is the primary danger of leaving substantial liquid cargo surge / slosh (efecto oleaje) inside a partially filled tank trailer (cisterna) without internal baffles (rompeolas)?

1. The liquid will evaporate through the fuel cap
2. Liquid surging backward and forward destabilizes braking, while lateral sloshing in curves dramatically increases vehicle rollover risk
3. Liquid slosh causes the headlights to dim
4. Liquid friction causes the tank metal to rust instantly