6 DO-IT-YOURSELF MAINTENANCE
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The engine oil and filter should be changed at those intervals specified inthe maintenance schedule in Section 5. If the car is being driven in severe conditions, more frequent oil and filterchanges are required. The procedure for changing the oil and filter is as follows: 
1. Park the car on level ground and set
the parking brake. Start the engine and let it warm up until the needle on the coolant temperature gauge movesabove the lowest mark. Turn the engine off and place the gear selec- tor lever in reverse gear.
2. Lift up the front passenger's seat (Refer to "To Inspect the EngineCompartment Under the FrontPassenger's Seat" on page 1-13.) and remove the engine oil  filler cap.
3. Slide underneath the car and loosen the drain plug by turning it counter-clockwise with a wrench of the proper size. Be sure that a drain pan is inposition to catch the oil as it drains out, then remove the drain plug.
CHANGING THE OIL AND FILTER
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 down- wards in the cylinder. High negativepressure generated during engine 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.
o The engine oil consumption is
strongly effected by the viscosityand quality of oil, engine rpm and driving condition etc. The engine oil is more consumed under severedriving conditions such as high speeds and frequent acceleration and deceleration than normal driv-ing condition. G040A03HR-GAT 2.6 N/A
G040A01HR
Oil filler capDrain plugOil filter
2.5 TCI
HHR5006
Oil filler cap
Drain plug Oil filter   
6
DO-IT-YOURSELF MAINTENANCE
11
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G050D01HR
G050D01HR-GAT To Change the Coolant The coolant should be changed at those intervals specified in the vehiclemaintenance schedule in Section 5.
CAUTION:
Engine coolant can damage the fin-ish of your car. If you spill enginecoolant on the car, wash it off thor- oughly with clean water.
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1. Park the car on level ground, set the parking brake and lift up the front passenger's seat. (Refer to "To in- spect the Engine Compartment Un- der the Front Passenger's Seat" onpage 1-13). 2. Turn the radiator cap counterclock-
wise without pressing down on it,until it stops. This relieves any pres-sure remaining in the cooling sys- tem. And remove the radiator cap by pushing down and turning counter-clockwise.
WARNING:
Remove the radiator cap when the radiator is cool. 3. Be sure your drain receptacle is in
place. Open the drain cock on the radiator. Allow all the engine coolant to drain from the cooling system, then securely close the drain cock.
4. Check Section 9 for the capacity of the cooling system in your car. Then,following the manufacturer's direc-tions on the engine coolant contain- er, add the appropriate quantity of coolant to the radiator.
5. Fill the radiator with clean demineral- ized or distilled water. Continue toadd clean demineralized or distilledwater in small quantities until the fluid level stays up in the radiator neck.
G050D02HR