Mitsubishi Lancer Evolution Owner's Manual page 303

Vehicle care
Never spray or splash water on the electrical com-
ponents in the engine compartment, as this may
cause damage.
Do not bring the nearby parts, the plastic parts and
so on into contact with sulphuric acid (battery elec-
trolyte) which may crack, stain or discolour them.
If they are in contact, wipe off with soft cloth, cha-
mois or the like and an aqueous solution of neutral
detergent then immediately rinse the affected parts
with plenty of water.
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