When the soldiers heard that Captain Qi had a solution, they were overjoyed. After all, they had to finish testing the usability of the boat before modifying the others being built.
If the car engine worked, they could get more and make every boat an engine-driven one.
It wouldn't be completely reliant on the engine as their oars will still be used, but it will make moving forward easier and faster. Getting swept away by the small waves appearing in the water won't be easy.
Also, they were soldiers, not stupid people, they understood that their discharge might cause some people unrest and action against them might be taken while in the water.
They didn't want to be in completely passive positions.
Qi Long called a small group leader from the other battalions and one of his man from his squad and had them go to retrieve two gallons of gasoline from the vehicle they had hidden before.