Engine Oil Level Check - Mack Granite GU Series Operator's Handbook Manual

274 MAINTENANCE AND LUBRICATION

ENGINE OIL LEVEL CHECK

As the operator of this vehicle, it is important for you to perform the daily
inspections necessary to keep your truck in good shape. Maintaining the
proper oil level in your engine crankcase cannot be overemphasized.
Before checking the oil, remember these important points:
• Measurement of the oil level must be taken on level ground.
• The best time to check oil level is while the engine is COLD (prior to starting
at the beginning of the work day, or after the vehicle has sat approximately
2 hours). At normal operating temperature (engine oil temperature above
79.4°C [175°F]), oil level can be checked 15 minutes after shut down.
CAUTION
Failure to wait a sufficient amount of time (2 hours if engine oil temperature is
below 79.4°C [175°F]) or 15 minutes if oil temperature is above 79.4°C [175°F])
will result in an inaccurate dipstick reading.
• The level must be close to the FULL line (at least between the ADD and
FULL lines) on the dipstick, but must NOT exceed the FULL line (refer to
illustration below).
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