In the fuel tank

 is a stash featured in S.T.A.L.K.E.R.: Lost Alpha. "I looted this off a stiff that tried to make it to the NPP."

- PDA description

Overview

 * Handy loot, but only has a 3% probability of being given.

Trivia

 * All stash coordinates in Pripyat City require the player to actually be on that level.