Gasoline

Gasoline is a tool in Johnny Trigger. It first appears in Level 6.

Appearance
Gasoline can be a barrel or a gas tank. Whichever one it is, it is always a bright red colour with a triangle-shaped fire hazard in the middle

Use
Gasoline can be good or bad.

It can be useful to kill as much as three enemies if they are standing near the barrel/gas tank.

However, if there's a hostage nearby, then you'll fail the level as soon as you shoot the gasoline, as it also kills hostages.