Mazda 626 Owner's Manual page 312

Maintenance
2.5-liter engine
Loosen
Cooling system cap
Loosen
Drain plug
J94A7010A
3. With the drain plug loose but not
fully removed, flush out the system
with running water.
4. Drain the system completely and
retighten the plug.
8-24
Form No. 8P95-EA-00G
5. Fill the radiator (to the top of the
filler neck) and then the coolant
Tighten
reservoir (to F) with as much
ethylene-glycol-based coolant and
water as necessary to provide
protection from freezing and
corrosion.
In extremely cold climates, add the
amount recommended by the
Tighten
coolant manufacturer.
6. Reinstall the cooling system cap.
7. Run the engine at idle for about 10
minutes.
8. Then do this:
• Run the engine at 2,500 rpm for
about 5 minutes.
• Increase the engine speed to
3,000 rpm for about 5 seconds
and then release the accelerator.
• Do this 4 or 5 times.
• Make sure the engine
temperature gauge does not
reach the HOT zone.
After turning off the engine, inspect
the drain plug and the water hoses
for leaks.