Mazda CX-3 Owner's Manual page 554

Maintenance and Care
Owner Maintenance
SKYACTIV-D 1.5
Cooling system cap
Cooling fan
If it is at or near L, add enough coolant to
the coolant reservoir to provide freezing
and corrosion protection and to bring the
level to F or FULL.
Securely tighten the coolant reservoir tank
cap after adding coolant.
CAUTION
Radiator coolant will damage paint.
   
Rinse it off quickly if spilled.

If the "FL22" mark is shown on or
    
near the cooling system cap, use
of FL-22 is recommended when
replacing engine coolant. Using
engine coolant other than FL-22 may
cause serious damage to the engine
and cooling system.
6–28
Coolant reservoir
If the coolant reservoir is empty or new
coolant is required frequently, consult
an expert repairer, we recommend an
Authorised Mazda Repairer.