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Home >> Mercedes Benz >> 2008 >> GL450 AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 14 (Lubrication, Oil Cooling - 164 Chassis -- Diesel) >> Testing & Repair >> Measure oil consumption - AR18.00-P-0025OM >> Determine oil consumption - AR18.00-P-0025-05OM

Determine oil consumption - AR18.00-P-0025-05OM

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 Mercedes-Benz ML350, 2010 Mercedes-Benz ML350, 2009 Mercedes-Benz ML320, 2009 Mercedes-Benz GL320, and 2008 Mercedes-Benz ML320. However, it is still accessible from the selected car via links, so may be relevant.

Determine the oil mass before the measuring drive and note down the kilometer reading 

  1. Place the vehicle on an even, horizontal surface.
  2. Warm up engine to normal operating temperature. IMPORTANTHIGH PRESSURE TEST Temperature of engine oil  80°C or 176°F
  3. Fill the engine oil level up to maximum.
  4. Drain the engine oil and collect it in a clean container.
  5. Weigh the vessel with the engine oil.
  6. Note down the mass (m 1  )  of the filled container, with the kilometer reading (s 1  1)  on the "Engine analysis sheet" form.
  7. Pour the engine oil from the container into the engine.

    Measuring drive 

  8. Perform measuring drive.

    IMPORTANT 1000 km trip by customer.

    Determine the oil mass after measuring drive and note down the kilometer reading 

  9. Place the vehicle on an even, horizontal surface.
  10. Warm up engine to normal operating temperature. IMPORTANTHIGH PRESSURE TEST Temperature of engine oil  80°C or 176°F
  11. Drain the engine oil and collect it in a clean container.
  12. Weigh the vessel with the engine oil.
  13. Note down the mass (m 2  )  of the filled container and the kilometer reading (s 2  )  on the "Engine analysis sheet" form.

Calculate oil consumption: 

IMPORTANT Oil density (= 0.85 kg/l)

Measurement distance (s) = kilometer reading (s2) - kilometer reading (s1)

Mass difference (mdiff ) = mass (m1) - mass (m2)

Oil consumption (Voil ) = Mass difference (m diff ) x 1000/Measurement distance (smess ) x oil density

Example of oil consumption calculation: 

s mess = 235778 km - 234567 km = 1211 km

mdiff = 8.5 kg - 7.2 kg = 1.3 kg

Voil = 1.3kg x 1000/1211 km x 0.85 kg/l = 1.26 l/1000 km

IMPORTANT Depending on driving style, the engine consumes up to 0.8 liters of oil per 1000 kilometers.