Cooling System, Draining and Filling

- Anti-freeze and coolant additives marked "In accordance with TLVW774A" prevent freezing, corrosion damage, scale formation and raises the coolant's boiling point.
- The high boiling point of the coolant mixture helps improve engine efficiency when operating at full load, particularly in tropical climates.
- The cooling system is filled for use year-round with a mixture of water and G11 anti-freeze coolant additive.

CAUTION:
^ A new G12 coolant additive, recognized by its red color, has been used in production as of 08.96, replacing the G11 used previously.
^ The G11 and G12 coolant additives are NOT interchangeable, and must NEVER be mixed. Use only water or G12 coolant additive G012A8DA1 to top up cooling systems filed with G12.
^ Contamination of G12 with other coolants can be identified by discoloration (brown, purple, etc.), and foamy deposits in the radiator or expansion tank. If contaminated, the system must be drained and flushed immediately.
^ G12 coolant may also be used in older vehicles, but only if the cooling system is drained and flushed as described below.
^ Part numbers listed are for reference only. Always check with the Parts supplier for the latest information.

DRAINING





- Drain coolant from engine drain plug (arrow) using special tool 3247, and at drain plug on bottom left of radiator.
- Tighten to: 20 Nm (15 ft. lbs.)
- Remove expansion tank cap.

FLUSHING
- Engine at normal operating temperature (heater valve open where applicable)
- Coolant drained
- Apply compressed air to expansion tank to help blow out remaining coolant.
- Close cooling system, fill with distilled water, then run engine for minimum of 2 minutes.
- Drain cooling system and apply compressed air to expansion tank to help blow out remaining water.
- Close cooling system and fill with appropriate mixture of G12 coolant additive and distilled water.

FILLING





- Recommended mixing ratios for 11 liter (11.6 qt.) capacity:
- Open bleeder screw (arrow) in coolant hose to heater core approximately two turns.





- Open bleeder screw (approximately 2 turns) in large coolant pipe, near engine coolant temperature sensor.
- Add coolant to expansion tank.
- Close bleeder screws when coolant starts to run out.
- Fill expansion tank until level reaches top edge, then install cap on expansion tank.
- Run engine at idle until coolant fan has switched on at least once.
- Increase engine speed to 2000 RPM for approximately 30 seconds.
- Stop engine (switch ignition OFF), and check coolant level in expansion tank.
- Top up to "Max" mark if necessary.