owners manual Toyota Corolla

owners manual Toyota Corolla - year of production: 1997, 1998, 1999, 2000, 2001, 2002 - Toyota Corolla VIII 8 E110 owners manual EN

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text version of content this owner's manual page from owners manual to the vehicle Toyota Corolla, year of production 1997 - 2002:

1998 COROLLA(U) Facts about engine oil consumption FUNCTIONS OF ENGINE OIL Oil is also used to lubricate the stems The diluting ingredients evaporate out Engine oil has the primary functions ofof the intake valves. Some of this oilwhen the vehicle is then driven at high lubricating and cooling the inside of the is sucked into the combustion chamber speeds, as on an express way, making it together with the intake air and is engine, and plays a major role in main- appear that oil is excessively consumed taining the engine in proper working order.burned along with the fuel. High tem-after driving at high speeds. ENGINE OIL CONSUMPTION perature exhaust gases also burn theIMPORTANCE OF ENGINE OIL LEVEL oil used to lubricate the exhaust valveCHECK It is normal that an engine should con-stems. One of the most important points in prop- sume some engine oil during normal The amount of engine oil consumed de- er vehicle maintenance is to keep the en- engine operation. The causes of oil pends on the viscosity of the oil, the consumption in a normal engine are as quality of the oil and the conditions thegine oil at the optimum level so that oil follows. vehicle is driven under. function will not be impaired. Therefore, it Oil is used to lubricate pistons, piston is essential that the oil level be checked rings and cylinders. A thin film of oil More oil is consumed by hig−hspeed driv-regularly. Toyota recommends that the oil is left on the cylinder wall when a pis- ing and frequent acceleration and decel- level be checked every time you refuel ton moves downwards in the cylinder.eration. the vehicle. High negative pressure generated whenA new engine consumes more oil, sinceNOTICE its pistons, piston rings and cylinder walls the vehicle is decelerating sucks some of this oil into the combustion chamber.have not become conditioned.Failure to check the oil level regularly This oil as well as some part of the oil could lead to serious engine trouble When judging the amount of oil con- film left on the cylinder wall is burned sumption, note that the oil may becomedue to insufficient oil. by the high temperature combustion diluted and make it difficult to judge gases during the combustion process.the true level accurately.For detailed information on oil level check, see ”Checking the engine oil level” in As an example, if a vehicle is used for repeated short trips, and consumes a nor-Chapter 7−2. mal amount of oil, the dipstick may not show any drop in the oil level at all, even after 1000 km (600 miles) or more. This is because the oil is gradually becoming diluted with fuel or moisture, making it appear that the oil level has not changed. 129

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year of production from: 1997

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