Vauxhall Workshop Service and Repair Manuals

Cooling System  

Cooling System, Top Up and Bleed  

  Important!   

In Aftersales, the "green" coolant 19 40 656 (90 297 545) must be used for vehicles up to MY '01, the "red" coolant 19 40 650 (91 94 431) must be used for vehicles as of MY '01, ensure a concentration of 50%. The two coolants must not be mixed together under any circumstances. The anti-freeze does not only protect the entire cooling system from freezing, it also protects all the components that the coolant has washed over from rusting/calcium formation. For this reason, even in tropical regions, anti-freeze must be used.  

The water quality also plays an important role in addition to the mix ratio. Water of drinkable quality usually meets these requirements. The quality of purified sea water is inadequate!  

Damage may also be caused to the engine if unauthorised anti-freeze agent is used.  

If radiator, cylinder head or cylinder head seal have been replaced the old coolant must not be re-used.  

In order to ensure that the cooling system is correctly bled, the vehicle heating rotary knob must be set to "Warm".  

  Remove, Disconnect   

X 16 SZR 1)  : Disconnect wiring harness plug (1) from coolant temperature sender and remove coolant temperature sender.     Inspect    Top up coolant until it emerges at the mounting bore of the coolant temperature sender without bubbles.     Install, Connect    Attach coolant temperature sender to intake manifold - tightening torque 11 Nm / 8 lbf. ft. Connect wiring harness plug to coolant temperature sender.   All engines: Top up coolant to "KALT/COLD" mark on coolant compensation tank. After closing the cooling system, let engine run warm until thermostat opens (coolant temperature approx. 92 ° C).   Allow engine to cool and check coolant level; if necessary, top up coolant to "KALT/COLD" mark on coolant compensation tank.

1)  For 16 LZ2 and 20 NEJ: the cooling system bleeds itself during the engine warm-up.