1. Measure the engine coolant temperature and specific gravity using a thermometer and a hydrometer.
CAUTION:
Use engine coolant at a concentration that meets the environmental conditions in which the vehicle is driven, otherwise engine damage could occur.
The engine has aluminum parts and must be protected by an ethylene-glycol-based coolant to prevent corrosion and freezing.
Do not use coolants containing Alcohol, Methanol, Borate or Silicate. These coolants could damage the cooling system.
Use only soft (demineralized) water in the coolant mixture. Water that contains minerals will cut down on the coolant’s effectiveness.
Engine coolant damages paint. If engine coolant does get on a painted surface, rinse it off quickly.
NOTE:
If the “FL22” mark is shown on or near the cooling system cap, use Mazda Genuine FL22 engine coolant.

FL22 type engine coolant is shipped as a diluted solution. Use the solution as is when replacing coolant.
2. Determine the engine coolant protection level by referring to the graph shown in the figure.

If the engine coolant protection level is not correct, add water or engine coolant.
Engine Coolant Level Inspection
Engine Coolant ReplacementFuel Filler Cap
Purpose, Function
Releases evaporative gas from the fuel tank if there is a malfunction in
the evaporative gas passage between the fuel tank and the intake manifold. As
a result, deformation of the fuel tank caused by evaporative gas pressure is
prevented.
Construction
T ...
Remote Transmitter Battery Voltage Inspection
NOTE:
Because the remote transmitter battery power cannot be determined using the
battery itself, determine by the remote transmitter battery low warning operation
conditions.
Operation procedure for remote transmitter battery low warning
1. Place the remote transmitter inside t ...
Oil Control Valve (OCV) Removal/Installation [Skyactiv G 2.0]
WARNING:
A hot engine can cause severe burns. Turn off the engine and wait until it
is cool before servicing.
1. Disconnect the negative battery cable..
2. Remove the plug hole plate..
3. Remove the ignition coil/ion sensors..
4. Remove the cylinder head cover..
5. Remove in ...