2010 Mercedes GL-Class Owner's Manual - Page 232

230 Engine compartment accident, for example. The hood could otherwise come loose while the vehicle is in motion and injure you and/or others. X must have been stationary for at least 5 minutes with the engine turned off. Operation Let the hood drop from a height of approximately 8 in (20 cm). X Check to make sure the hood is fully closed. If you can raise the hood at a point above the headlamps, then it is not properly closed. Open it again and let it drop with somewhat greater force. Checking engine oil level X Open the hood (Y page 228). Radiator i Vehicles with diesel engine: Do not cover the radiator, for example with a winter front or bug cover. Otherwise the readings of the on-board diagnostic system may be inaccurate. Some of theses readings are required by law and must be accurate at all times. Engine oil The amount of oil your engine consumes will depend on a number of factors, including driving style. Increased oil consumption can occur when the vehicle is new or the vehicle is driven frequently at higher engine speeds. Engine oil consumption checks should only be made after the vehicle break-in period. Example illustration: Gasoline engine Example illustration: Diesel engine X ! Do not use any special lubricant additives, as these may damage the drive assemblies. Using special additives not approved by Mercedes-Benz may cause damage not covered by the Mercedes-Benz Limited Warranty. For further information contact an authorized Mercedes-Benz Center. Notes on checking engine oil level When checking the oil level the vehicle must be parked on level ground and the vehicle Pull out oil dipstick :. X Wipe oil dipstick : clean. X Slowly insert oil dipstick : fully into the dipstick guide tube. X Pull out oil dipstick : again after approximately 3 seconds to obtain accurate reading. The oil level is correct when it is between lower (min) mark = and upper (max) mark ; of oil dipstick :. i The filling quantity between the upper and lower marks on the oil dipstick is approximately 2.1 US qt. (2.0 l). X If necessary, add engine oil.