Mazda 3 Owners Manual: Engine Coolant

Mazda 3 Owners Manual / Maintenance and Care / Owner Maintenance / Engine Coolant

Inspecting Coolant Level

WARNING Do not use a match or live fl ame in the engine compartment. DO NOT ADD COOLANT WHEN THE ENGINE IS HOT: A hot engine is dangerous. If the engine has been running, parts of the engine compartment can become very hot. You could be burned. Carefully inspect the engine coolant in the coolant reservoir, but do not open it.

Switch the ignition to
off and make sure the fan is not running before attempting to work near the cooling fan: Working near the cooling fan when it is running is dangerous. The fan could continue running indefi nitely even if the engine has stopped and the engine compartment temperature is high. You could be hit by the fan and seriously injured.

Do not remove either
cooling system cap when the engine and radiator are hot: When the engine and radiator are hot, scalding coolant and steam may shoot out under pressure and cause serious injury.

NOTE Changing the coolant should be done by an Authorized Mazda Dealer.

Inspect the antifreeze protection and coolant level in the coolant reservoir at least once a year—at the beginning of the winter season—and before traveling where temperatures may drop below freezing.

Inspect the condition and connections of all cooling system and heater hoses.

Replace any that are swollen or deteriorated.

The coolant should be at full in the radiator and between the F and L marks on the coolant reservoir when the engine is cool.

Mazda 3. Inspecting Coolant Level

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.

Securely tighten the coolant reservoir tank cap after adding coolant.

CAUTION

Radiator coolant will damage paint.
Rinse it off quickly if spilled.
Use only soft (demineralized) water in the coolant mixture. Water that contains minerals will cut down on the coolant's eff ectiveness.
Do not add only water. Always add a proper coolant mixture.
The engine has aluminum parts and must be protected by an ethylene-glycolbased coolant to prevent corrosion and freezing.
DO NOT USE coolants Containing Alcohol, methanol, Borate or Silicate.
These coolants could damage the cooling system.
DO NOT MIX alcohol or methanol with the coolant. This could damage the cooling system.
Do not use a solution that contains more than 60% antifreeze.
This would reduce eff ectiveness.
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.

Mazda 3. Inspecting Coolant Level

If the coolant reservoir is empty or new coolant is required frequently, consult an Authorized Mazda Dealer.

Inspecting Engine Oil Level

Be sure the vehicle is on a level surface. Warm up the engine to normal operating temperature. Turn it off and wait at least 5 minutes for the oil to return to the oil pan. Pull out the ...

Brake/Clutch Fluid

Inspecting Brake/Clutch Fluid Level WARNING If the brake/clutch fl uid level is low, have the brakes inspected: A low brake/clutch fl uid level is dangerous. A low level could i ...

Other materials:

HomeLink Wireless Control System*
NOTE HomeLink and HomeLink house are registered trademarks of Johnson Controls. The HomeLink system replaces up to 3 hand-held transmitters with a single built-in component in the auto-dimming mirror. Pressing the HomeLink button on the auto-dimming mirror activates garage doors, gates and ...

Engine Tune Up [Mzr 2.0, Mzr 2.5]
NOTE: If the accelerator pedal is depressed continuously for a specified time, the engine speed may decrease to the idle speed. This is due to the fuel cut control operation, which prevents overheating, and it does not indicate a malfunction. Engine Tune-up Preparation 1. Verify ...

General Procedures (Brake)
Wheel and Tire Installation 1. When installing the wheels and tires, tighten the wheel nuts in a criss-cross pattern to the following tightening torque. Tightening torque 88—118 N·m {9.0—12 Kgf·m, 65—87 ft·lbf} Brake Lines Disconnection 1. If any brake line has been ...