Fiat 500 Owner's Handbook Manual page 199

CHECKING FLUID LEVELS
Never smoke while working in the engine
compartment: gas and inflammable va-
pours may be present, with the risk of fire.
Be careful,when topping up, and take care
not to mix up the various types of fluids:
they are all incompatible with one another
and could seriously damage the car.
198
ATTENZIONE