DayZ field wiki · Gear
Siphon
Steal the tank
Short answer
A hose and someone else's car. Still a crime the server will not punish. People might.
Also: siphon hose
How it works
You can siphon fuel. It takes time and a container. You are a silhouette next to a magnet.
What to do
One watches. Then leave.
Don't
Don't siphon in the middle of a city as a bit.