WD Moisture Repelling Lubricant (302317)

Displaces moisture, cleans and protects electronic, electrical and mechanical equipment.
Helps to reduce friction and wear.
Leaves a protective film coating, to help prevent oxidation and corrosion.
Frees rusted parts

Used by Airworld as an after flight spray inside the engine compartment to keep moisture at bay and those pesky Lycoming cylinder fins from going rusty.