Failure to do so will result in stripping the corners off the head of the plug. When removing this plug, be sure to use a tight fitting 6-point socket/spanner. When draining, remove the engine block drain plug too. The Maintenance Schedule calls for replacement of the engine coolant every two years. Using too 'rich' of a mixture is expensive and can cause degradation of hoses and other parts, ineffective heat transfer, and ineffective mixture of protective ingredients throughout the system. Using a 'lean' mixture of concentrate-water will not protect from corrosion. If the buildup is severe enough, the tubes in the radiator and heater cores will be completely blocked and coolant will not flow. This creates an insulating barrier which reduces the transfer of heat from engine parts to coolant, and coolant to radiator. The Datsun 1200 uses an aluminium head and water pump.įailure to use coolant with anti-corrosive properties or failing to replace coolant regularly will result in rapid degradation of the aluminium parts.Ĭheck coolant condition using a tester for this purpose, or drain and replace it every 2 years with new, properly mixed coolant, regardless of the manufacturer's claims of years/mileage.ĥ0/50 coolant concentrate and DEMINERALISED water.įailure to use demineralised water can result in scale build-up in the system. (Nissan "Long Life Coolant")Īny modern antifreeze/coolant that is compatible with aluminium parts should be acceptable.
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