Engine Coolant Replacement

WARNING: This page is about a different car, the 2002 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.

Drain the coolant in the coolant reservoir.
Remove the radiator cap and the coolant filler cap (KL) and loosen the radiator drain plug.

Fig 1: Identifying Radiator Drain Plugs (2.0L & 2.5L)
Courtesy of MAZDA MOTORS CORP.
Drain the coolant into a container.
Flush the cooling system with water until all traces of color are gone.
Leave the system until it drains completely.
Tighten the radiator drain plug.
CAUTION:
- Do not use non-genuine or non-equivalent coolant. Do not mix green coolant with orange coolant. This could damage the cooling system.
- Use only soft (demineralized) water in the coolant mixture. Water that contains minerals will reduce the coolant effectiveness.
Referring to Fig 2 and Fig 3 , select proper gravity of the coolant. Slowly pour the coolant into the radiator up to the coolant filler port (FS) or into the engine up to the coolant filler port (KL).
Filling pace

1.0 L {1.1 US qt, 0.9 Imp qt}/min. [max]

Fig 2: Coolant Specific Gravity Graph
Courtesy of MAZDA MOTORS CORP.

Fig 3: Antifreeze Solution Mixture Percentage Table
Courtesy of MAZDA MOTORS CORP.
Fill the coolant into the reservoir up to the F mark on the coolant reservoir.
Fully install the radiator cap and the coolant filler cap (KL).
Start the engine and idle for approx. 10 min. If the coolant temperature becomes too high, stop the engine to prevent it from overheating.
After engine warms up, run it at approx. 2,500 rpm for5 min.
Increase the engine speed to approx. 3,000 rpm for 5 s , then return to idle. Repeat several times.
Stop the engine and wait until it is cool.
Inspect the coolant level.
- If it is low, repeat steps 8 - 13 .
Inspect for the coolant leakage.