Engine Coolant Replacement - Mazda CX-7 2007 Workshop Manual

ENGINE COOLANT REPLACEMENT[L3 WITH TC]
Warning
• Never remove the cooling system cap or loosen the radiator drain plug while the engine is
running, or when the engine and radiator are hot. Scalding engine coolant and steam may shoot
out and cause serious injury. It may also damage the engine and cooling system.
• Turn off the engine and wait until it is cool. Even then, be very careful when removing the cap.
Wrap a thick cloth around it and slowly turn it counterclockwise to the first stop. Step back while
the pressure escapes.
• When you are sure all the pressure is gone, press down on the cap using the cloth, turn it, and
remove it.
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 FL22 type engine coolant.
• FL22 type engine coolant is shipped as a
diluted solution (55% coolant, 45% water).
Use the solution as is when replacing
coolant.
Engine coolant capacity (approx. quantity)
9.0 L {9.5 US qt, 7.9 Imp qt}
1. Remove the cooling system cap.
2. Remove the radiator drain plug and drain the
engine coolant into a container.
3. Flush the cooling system with water until all traces
of color are gone.
4. Let the system drain completely.
5. Tighten the radiator drain plug with a new gasket.
Tightening torque
1.5— 2.4 N·m {15— 25 kgf·cm, 13— 21 in·lbf}
6. Referring to the following chart, select the correct
volume percentage of the water and engine
coolant.
Antifreeze solution mixture percentage (Except FL22 type engine coolant)
Engine coolant protection
Above -16 °C {3 °F}
Above -26 °C {-15 °F}
Above -40 °C {-40 °F}
COOLING SYSTEM [L3 WITH TC]
Volume percentage (%)
Water Coolant
65 35
55 45
45 55
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COOLING SYSTEM CAP
RADIATOR DRAIN PLUG
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Gravity at 20 °C {68 °F}
1.057
1.072
1.086
01-12–5
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