Team 17 reached the oil tower in two whole days while the destination is only a few kilometers away since McFarland could reached it with his bike in the morning and managed to come back still in the same morning.
Given the extreme urgency of the task, it's impossible that a real firemen squad stopped to sleep at night instead of hurrying to the destination.
During the first mission, when Spina lights his cigarette throws the used match out of the window in a horizontal way. That same match ends on the roof of the truck. Even during windy days it's impossible that an object thrown out of a window of a moving truck could end on the roof of that very truck. Further more, it's impossible that the object could start a fire on the roof cover so fast even if that was made of paper.
In the first movie, Ruoppolo left his wife after discovering that she has an affair with another man. The couple had no child. In this movie Ruoppolo is still married and has 5 children most of which already grown up. Since the movie is set only 2 years after the first one it's impossible that Ruoppolo could have started such a brand new family.