Quest V6-3.5L (VQ35DE) (2009)
Coolant: Service and Repair
ENGINE COOLANT
Changing Engine Coolant
WARNING:
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To avoid being scalded, never change the coolant when the engine is hot.
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Wrap a thick cloth around cap and carefully remove the cap. First, turn the cap a quarter of a turn to release built-up pressure. Then
push down and turn the cap all the way to remove.
DRAINING ENGINE COOLANT
1. Remove engine undercover.
2. Open radiator drain plug at the bottom of radiator and remove the radiator filler cap. This is the only step required for a partial cooling system
drain (radiator only).
3. For a complete cooling system drain, remove the reservoir tank and drain the coolant, and then clean the reservoir tank before installation.
CAUTION:
Do not allow coolant to spill on the drive belts.
4. When performing a complete cooling system drain (to remove the engine or for engine repair), remove the cylinder block front drain plug and the
cylinder block RH and LH drain plugs.
CAUTION:
If the vehicle is equipped with an engine block heater in place of the cylinder block LH drain plug, do not remove the engine block heater.