Cowl Lube

Rare Plane upgrade

Very rare plane upgrade. Reduces drag, increasing terminal velocity.
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Tax: 7 g / 100 i
Guild: 5 g / 100 i
Wiki page
NameLocationNormal %Difficult %Lethal %
Slave DriverThe Island1 in 20
Dr. GeckelstonHome for Special Children1 in 1
TreasureThe Vaults1 in 7
Guard LionThe Island1 in 20
GroundskeeperThe Island1 in 20
Estate GuardThe Island1 in 20

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.