- carefully pour oil exactly up to the top mark;
- after 500 or 1000 km of running, use a measuring device to add oil and determine the consumption per 1000 km.
Some of the oil inevitably burns during engine operation. Run-in engines consume about 0.2 l per 1000 km. Oil consumption depends on the following circumstances.
Overfilling with oil leads to increased oil consumption, since under the influence of crankcase ventilation, excess oil gets into the engine cylinders.
Oil with low viscosity burns faster than oil with high viscosity. Seasonal oil becomes liquid like water when hot, while all-season oil remains more viscous. This quality, in particular, can reduce oil consumption when driving long distances.
Motor oil, especially all-season oil, which remains in the engine for a long time, needs to be changed more often.
An active driving style, in addition to increased fuel consumption, also leads to increased oil consumption. This is especially evident when a new engine is immediately given a full load.
During the break-in period, the engine requires more lubrication.
Oil leaks can occur in the following places:
- crankshaft and camshaft gaskets (these places are covered with a casing);
- cylinder head cover gaskets;
- cylinder head gasket;
- oil pressure sensor;
- oil filter gasket;
- oil pan gasket;
- rear crankshaft oil seal (oil appears at the junction of the engine and gearbox);
- in places where engine components are worn, for example, due to defective valve stem seals, too large a gap between the valve stem and guide bushing, or incorrectly installed piston rings (if they were replaced), due to a defective or scuffed cylinder wall.
Frequent checks show that the engine uses little or no oil
During short trips in winter, the oil level may not decrease at all or may even increase. An increase in the oil level means that it contains fuel or condensate. Such oil noticeably loses its lubricating properties, so it is recommended to make regular long trips to "evaporate" the condensate. Check the oil level immediately after, as it may drop significantly due to fuel or water evaporation! For intensive city driving without long intermediate trips, select the appropriate oil change interval. The appropriate interval can be determined empirically during vehicle operation.
Article text obtained from the website MercedesMAN.ru