6- 10 DO-IT-YOURSELF MAINTENANCE
Diesel engine Only ethylene glycol based coolant with a corrosion inhibitor suited to aluminium alloy engine components should beused in the cooling system. No further additives or inhibitors should be used. The coolant specific gravity should bechecked as prescribed in the mainte- nance schedule to ensure adequate frost and corrosion protection. In addi-tion, the engine coolant must be re- placed at the specified interval since the corrosion inhibitor properties dete-riorate with time. It is important to note that whilst an increase in the concentration of antifreeze gives an increase in the level of frost protection, a solution which is in excess of 65% anti freeze will result inreduced frost protection and engine overheating. Therefore the recom- mended concentration of 50% shouldnot be exceeded for general use. The use of methanol based anti freeze compounds may result in engine over-heating and will invalidate the vehicle warranty.
Petrol engine
SG050B1-E Coolant recommendations
HTB170
HTB170A NOTE: It is imperative that vehicles fitted with an air conditioning system have a coolant concentration of the rec-ommended strength at all times. The use of the air conditioning system when the cooling system is filledwith water only will result in the heater matrix freezing and subse- quently bursting.
