Factorio Forums

it burns out in about 2 seconds, Rocket fuel lasts a super long time. thought I would let you guys know.

Thanks for the report however no it doesn't. In fact it lasts for over a half hour.

Are you thinking that when the item is removed from the slot it's "burned up"? Because that's not how it works. The item is burned and all of the energy is stored inside the burner (the red fuel bar). When that hits zero it's used up (or if you pick up the vehicle).