Whale Oil

Rare Plane upgrade

Just as good as regular oil, but works in ultra-cold conditions.
Find sellers or buyers
Tax: 5 g / 100 i
Guild: 5 g / 100 i
Wiki page
NameLocationNormal %Difficult %Lethal %
Doctor NotraThe Island1 in 1
Husky Gang LeaderFrozen Owl Monastery1 in 5
TreasureFrozen Owl Monastery1 in 5
Mammoth-1Super Secret Base1 in 5
TreasureSuper Secret Base1 in 5

Drop rates are either: datamined, based on a pattern, or even simply estimated from observation.

As of 2019/11 drop rates can no longer be datamined. Data is updated based on patch notes and developer commentary.