radiator cap Hyundai Matrix 2006 Owner's Guide

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ZG030E1-A
ENGINE OIL CONSUMPTION Function of engine oil
Engine oil has the primary function of lubricating and cooling the inside of the engine.
Engine oil consumption It is normal that an engine should consume some engine oil in the course of normal driving. The cause of oil consumption in a normal engine are asfollows;
o Engine oil is used to lubricate pis- tons, piston rings and cylinders. A thin film of oil is left on the cylinder wall when a piston moves downwards in the cylinder. High negative pressure generated duringengine operation sucks some of the oil into the combustion chamber. This oil with some oil of the cylinder wall is burned by the high tempera- ture combustion gases during thecombustion process.
To add oil to the engine, remove the
filler cap by rotating in an counter-clockwise direction and pour engine oil into the engine. Before checking the level again, allow several minutes forthe oil to drain into the sump. Replace the oil filler cap rotating it in a clock- wise direction until tight.
The quantity of oil required to raise the
level from the minimum to maximumlevel is approximately 1 litre.
The distance between the "F" and "L"
marks is equal to about 1 liter(Petrol Engine)/1.2 liter(Diesel Engine) of oil.
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CAUTION:
Slowly pour the recommended oil into a funnel. Do not overfill toprevent engine to damage.!
WARNING:
Be very careful not to touch the radiator hose when checking the engine oil as it may be hot enoughto burn you. o The engine oil consumption is
strongly effected by the viscosityand quality of oil, engine rpm and driving condition etc. More engine oil may be consumed under severe driving conditions such as high speeds, frequent accelera- tion and deceleration, compared tonormal driving.

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ENGINE COOLANT CHECK- ING AND REPLACING
SG050B1-E Coolant recommended G050B01FC
SG050A1-E
WARNING:
Do not remove the radiator cap when the engine is hot, since the system is pressurised and coolant may be ejected from the radiator resultingin scalding.
G050B02FC
Petrol engine Diesel engine
Only ethylene glycol based coolantwith a corrosion inhibitor suited to alu- minium alloy engine components should be used in the cooling system. No further additives or inhibitors should be used. The coolant specific gravityshould be checked as prescribed in the maintenance schedule to ensure adequate frost and corrosion protec-tion. In addition, the engine coolant must be replaced at the specified in- terval since the corrosion inhibitor prop-erties deteriorate 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.
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 sys- tem when the cooling system isfilled with water only will result in the heater matrix freezing and sub- sequently bursting.

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OWNER MAINTENANCE
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SG050C1-E
To Check the Coolant Level If the level is below the "L" mark, add coolant of the correct concentrationuntil the level is between the "L" and "F" marks. If the level falls below the "L" mark on a regular basis despitebeing topped up, consult a Hyundai authorised repairer.
G050C01FC G050C02FC
Petrol engine
Diesel engine
The engine coolant level may be observed through the side of the plas- tic coolant reservoir (expansion tank) when the engine is cold.
G050D01FC
SG050D2-E
To Change the Coolant
The coolant should be changed at
those intervals specified in the vehicle maintenance schedule in Section 5.
NOTE: Care should be taken to ensure that
coolant is not allowed to spill onto the paintwork since the finish maybecome damaged. If coolant spill- age occurs, the affected area should be rinsed thoroughly with water.
1. Park the vehicle on level ground
and ensure that the parking brake is firmly applied, and the engine al- lowed to cool. Do not attempt this operation whilst the engine is hot since burning or scalding may result. 2. Prepare a suitable receptacle to
collect the displaced coolant and position this under the radiator drain tap.
3. With the heater temperature control set to the "HOT" position, removethe radiator cap and open the radia- tor drain tap.
4. When the engine coolant has drained completely, close the drain tap en-suring that this is not over tight- ened.
5. Prepare a suitable quantity of new engine coolant (refer to section 9)and pour this into the radiator.

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SPARKING PLUG REPLACE- MENT
G060A01L
SG060A1-E
(Petrol Engine)
This operation should only be per-
formed when the engine is cold.
1. Remove the centre cover from the engine rocker cover.
2. Remove plug lead from the sparking
plug to be replaced, pulling the lead by the rubber cap. (Pulling the lead may damage the carbon conductor).
G050D02FC
6. Start the engine with the radiator cap still removed and continue to add coolant as the level decreases as air is expelled from the system.When the level remains constant, replace the radiator cap and replen- ish the coolant reservoir.
7. When the engine is hot, check to ensure that no coolant leaks arepresent. WARNING:
The cooling fan is controlled by
engine coolant temperature and maysometimes operate even when theengine is not running. Use extreme caution when working near the blades of the cooling fan so thatyou are not injured by a rotating fan blade. As the engine coolant tem- perature decreases, the fan will au-tomatically shut off. This is a nor- mal condition. 0.039~0.043 in. (1.0~1.0 mm)