2010 Mercedes E-Class Owner's Manual - Page 192

190 Engine compartment For information on messages in the multifunction display concerning engine oil, see the "Practical hints" section (Y page 254). and emission control system not covered by the Mercedes-Benz Limited Warranty. X Adding engine oil ! Only use approved engine oils and oil filters required for vehicles with Maintenance System. For a listing of approved engine oils and oil filters, contact an authorized Mercedes-Benz Center or visit www.mbusa.com (USA only). The following will result in engine or emission control system damage not covered by the Mercedes-Benz Limited Warranty: RUsing engine oils and oil filters of specification other than those expressly required for the Maintenance System. RChanging of oil and oil filter at change intervals longer than those called for by the Maintenance System. RUsing any oil additives. Screw filler cap : back on filler neck. For more information on engine oil, see the "Technical data" section (Y page 301) and (Y page 302). Transmission fluid level The transmission fluid level does not need to be checked. If you notice transmission fluid loss or gearshifting malfunctions, have an authorized Mercedes-Benz Center check the transmission. Operation Coolant level The engine coolant is a mixture of water and anticorrosion/antifreeze. When checking the coolant level, the vehicle must be parked on level ground, and the coolant temperature must be below 158‡ (70†). G Warning! RUse In order to avoid any potentially serious burns: extreme caution when opening the hood if there are any signs of steam or coolant leaking from the cooling system, or if the coolant temperature gauge indicates that the coolant is overheated. not remove the cap on the coolant expansion tank if the coolant temperature is above 158‡ (70†). Allow the engine to cool down before removing the cap. The coolant expansion tank contains hot fluid and is under pressure. RDo Example illustration: E 350 (E 550 similar) X Unscrew filler cap : from filler neck. X Add engine oil as required. Be careful not to overfill with oil. Be careful not to spill any oil when adding. Avoid environmental damage caused by oil entering the ground or water. RUsing a rag, slowly open the cap approximately 1/2 turn counterclockwise to relieve excess pressure. If opened immediately, scalding hot fluid and steam will be blown out under pressure. not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which ! Excess oil must be siphoned or drained off. It could cause damage to the engine RDo