Quest V6-3.5L (VQ35DE) (2009)
Engine Oil: Testing and Inspection
ENGINE OIL
Inspection
OIL LEVEL
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Before starting the engine make sure the vehicle is parked on a flat and level surface, then check the oil level. If the engine is already running, turn
it off and allow five minutes before checking.
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Check that the oil level is within the low (L) and high (H) range as indicated on the dipstick.
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If the engine oil level is out of range, add oil as necessary.
OIL APPEARANCE
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Check engine oil for white milky or excessive contamination.
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If engine oil becomes milky, it is highly probable that it is contaminated with engine coolant. Repair or replace damaged parts.
OIL LEAKAGE
Check for oil leakage around the following areas:
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Upper and lower oil pan
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Oil pan drain plug
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Oil pressure switch
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Oil filter
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Oil cooler
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Water pump cover
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Timing chain tensioner cover
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Intake valve timing (IVT) control cover and intake valve timing (IVT) control solenoid valve
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Front cover
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Mating surface between cylinder block and cylinder head
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Mating surface between cylinder head and rocker cover
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Mating surface between the front timing chain case and rear timing chain case
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Crankshaft oil seal (front and rear)
OIL PRESSURE CHECK
WARNING:
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Be careful not to burn yourself, as engine oil may be hot.
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Put the selector lever in the Park "P" position.
1. Check the oil level.
2. Disconnect the oil pressure switch harness connector.
3. Remove the oil pressure switch.
CAUTION:
Do not drop or shock oil pressure switch.